include/atomic

// -*- C++ -*-
//===--------------------------- atomic -----------------------------------===//
//
//                     The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_ATOMIC
#define _LIBCPP_ATOMIC

/*
    atomic synopsis

namespace std
{

// order and consistency

typedef enum memory_order
{
    memory_order_relaxed,
    memory_order_consume,  // load-consume
    memory_order_acquire,  // load-acquire
    memory_order_release,  // store-release
    memory_order_acq_rel,  // store-release load-acquire
    memory_order_seq_cst   // store-release load-acquire
} memory_order;

template <class T> T kill_dependency(T y);

// lock-free property

#define ATOMIC_CHAR_LOCK_FREE unspecified
#define ATOMIC_CHAR16_T_LOCK_FREE unspecified
#define ATOMIC_CHAR32_T_LOCK_FREE unspecified
#define ATOMIC_WCHAR_T_LOCK_FREE unspecified
#define ATOMIC_SHORT_LOCK_FREE unspecified
#define ATOMIC_INT_LOCK_FREE unspecified
#define ATOMIC_LONG_LOCK_FREE unspecified
#define ATOMIC_LLONG_LOCK_FREE unspecified
#define ATOMIC_ADDRESS_LOCK_FREE unspecified

// operations on atomic types

#define ATOMIC_VAR_INIT(value) see below

// flag type and operations

typedef struct atomic_flag
{
    bool test_and_set(memory_order = memory_order_seq_cst) volatile;
    bool test_and_set(memory_order = memory_order_seq_cst);
    void clear(memory_order = memory_order_seq_cst) volatile;
    void clear(memory_order = memory_order_seq_cst);
    atomic_flag() = default;
    atomic_flag(const atomic_flag&) = delete;
    atomic_flag& operator=(const atomic_flag&) = delete;
    atomic_flag& operator=(const atomic_flag&) volatile = delete;
} atomic_flag;

bool atomic_flag_test_and_set(volatile atomic_flag*);
bool atomic_flag_test_and_set(atomic_flag*);
bool atomic_flag_test_and_set_explicit(volatile atomic_flag*, memory_order);
bool atomic_flag_test_and_set_explicit(atomic_flag*, memory_order);
void atomic_flag_clear(volatile atomic_flag*);
void atomic_flag_clear(atomic_flag*);
void atomic_flag_clear_explicit(volatile atomic_flag*, memory_order);
void atomic_flag_clear_explicit(atomic_flag*, memory_order);

#define ATOMIC_FLAG_INIT see below

// atomic_bool

typedef struct atomic_bool
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(bool, memory_order = memory_order_seq_cst) volatile;
    void store(bool, memory_order = memory_order_seq_cst);
    bool load(memory_order = memory_order_seq_cst) const volatile;
    bool load(memory_order = memory_order_seq_cst) const;
    operator bool() const volatile;
    operator bool() const;
    bool exchange(bool, memory_order = memory_order_seq_cst) volatile;
    bool exchange(bool, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(bool&, bool, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(bool&, bool, memory_order, memory_order);
    bool compare_exchange_strong(bool&, bool, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(bool&, bool, memory_order, memory_order);
    bool compare_exchange_weak(bool&, bool,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(bool&, bool,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(bool&, bool,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(bool&, bool,
                                 memory_order = memory_order_seq_cst);
    atomic_bool() = default;
    constexpr atomic_bool(bool);
    atomic_bool(const atomic_bool&) = delete;
    atomic_bool& operator=(const atomic_bool&) = delete;
    atomic_bool& operator=(const atomic_bool&) volatile = delete;
    bool operator=(bool) volatile;
} atomic_bool;

bool atomic_is_lock_free(const volatile atomic_bool*);
bool atomic_is_lock_free(const atomic_bool*);
void atomic_init(volatile atomic_bool*, bool);
void atomic_init(atomic_bool*, bool);
void atomic_store(volatile atomic_bool*, bool);
void atomic_store(atomic_bool*, bool);
void atomic_store_explicit(volatile atomic_bool*, bool, memory_order);
void atomic_store_explicit(atomic_bool*, bool, memory_order);
bool atomic_load(const volatile atomic_bool*);
bool atomic_load(const atomic_bool*);
bool atomic_load_explicit(const volatile atomic_bool*, memory_order);
bool atomic_load_explicit(const atomic_bool*, memory_order);
bool atomic_exchange(volatile atomic_bool*, bool);
bool atomic_exchange(atomic_bool*, bool);
bool atomic_exchange_explicit(volatile atomic_bool*, bool, memory_order);
bool atomic_exchange_explicit(atomic_bool*, bool, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_bool*, bool*, bool);
bool atomic_compare_exchange_weak(atomic_bool*, bool*, bool);
bool atomic_compare_exchange_strong(volatile atomic_bool*, bool*, bool);
bool atomic_compare_exchange_strong(atomic_bool*, bool*, bool);
bool atomic_compare_exchange_weak_explicit(volatile atomic_bool*, bool*, bool,
                                           memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_bool*, bool*, bool,
                                           memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_bool*, bool*, bool,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_bool*, bool*, bool,
                                             memory_order, memory_order);

// atomic_char

typedef struct atomic_char
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(char, memory_order = memory_order_seq_cst) volatile;
    void store(char, memory_order = memory_order_seq_cst);
    char load(memory_order = memory_order_seq_cst) const volatile;
    char load(memory_order = memory_order_seq_cst) const;
    operator char() const volatile;
    operator char() const;
    char exchange(char,
    memory_order = memory_order_seq_cst) volatile;
    char exchange(char, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(char&, char, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(char&, char, memory_order, memory_order);
    bool compare_exchange_strong(char&, char, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(char&, char, memory_order, memory_order);
    bool compare_exchange_weak(char&, char,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(char&, char,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(char&, char,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(char&, char,
                                 memory_order = memory_order_seq_cst);
    char fetch_add(char, memory_order = memory_order_seq_cst) volatile;
    char fetch_add(char, memory_order = memory_order_seq_cst);
    char fetch_sub(char, memory_order = memory_order_seq_cst) volatile;
    char fetch_sub(char, memory_order = memory_order_seq_cst);
    char fetch_and(char, memory_order = memory_order_seq_cst) volatile;
    char fetch_and(char, memory_order = memory_order_seq_cst);
    char fetch_or(char, memory_order = memory_order_seq_cst) volatile;
    char fetch_or(char, memory_order = memory_order_seq_cst);
    char fetch_xor(char, memory_order = memory_order_seq_cst) volatile;
    char fetch_xor(char, memory_order = memory_order_seq_cst);
    atomic_char() = default;
    constexpr atomic_char(char);
    atomic_char(const atomic_char&) = delete;
    atomic_char& operator=(const atomic_char&) = delete;
    atomic_char& operator=(const atomic_char&) volatile = delete;
    char operator=(char) volatile;
    char operator=(char);
    char operator++(int) volatile;
    char operator++(int);
    char operator--(int) volatile;
    char operator--(int);
    char operator++() volatile;
    char operator++();
    char operator--() volatile;
    char operator--();
    char operator+=(char) volatile;
    char operator+=(char);
    char operator-=(char) volatile;
    char operator-=(char);
    char operator&=(char) volatile;
    char operator&=(char);
    char operator|=(char) volatile;
    char operator|=(char);
    char operator^=(char) volatile;
    char operator^=(char);
} atomic_char;

bool atomic_is_lock_free(const volatile atomic_char*);
bool atomic_is_lock_free(const atomic_char*);
void atomic_init(volatile atomic_char*, itype);
void atomic_init(atomic_char*, itype);
void atomic_store(volatile atomic_char*, char);
void atomic_store(atomic_char*, char);
void atomic_store_explicit(volatile atomic_char*, char, memory_order);
void atomic_store_explicit(atomic_char*, char, memory_order);
char atomic_load(const volatile atomic_char*);
char atomic_load(const atomic_char*);
char atomic_load_explicit(const volatile atomic_char*, memory_order);
char atomic_load_explicit(const atomic_char*, memory_order);
char atomic_exchange(volatile atomic_char*, char);
char atomic_exchange(atomic_char*, char);
char atomic_exchange_explicit(volatile atomic_char*, char, memory_order);
char atomic_exchange_explicit(atomic_char*, char, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_char*, char*, char);
bool atomic_compare_exchange_weak(atomic_char*, char*, char);
bool atomic_compare_exchange_strong(volatile atomic_char*, char*, char);
bool atomic_compare_exchange_strong(atomic_char*, char*, char);
bool atomic_compare_exchange_weak_explicit(volatile atomic_char*, char*, char,
                                           memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_char*, char*, char,
                                           memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_char*, char*, char,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_char*, char*, char,
                                             memory_order, memory_order);
char atomic_fetch_add(volatile atomic_char*, char);
char atomic_fetch_add(atomic_char*, char);
char atomic_fetch_add_explicit(volatile atomic_char*, char, memory_order);
char atomic_fetch_add_explicit(atomic_char*, char, memory_order);
char atomic_fetch_sub(volatile atomic_char*, char);
char atomic_fetch_sub(atomic_char*, char);
char atomic_fetch_sub_explicit(volatile atomic_char*, char, memory_order);
char atomic_fetch_sub_explicit(atomic_char*, char, memory_order);
char atomic_fetch_and(volatile atomic_char*, char);
char atomic_fetch_and(atomic_char*, char);
char atomic_fetch_and_explicit(volatile atomic_char*, char, memory_order);
char atomic_fetch_and_explicit(atomic_char*, char, memory_order);
char atomic_fetch_or(volatile atomic_char*, char);
char atomic_fetch_or(atomic_char*, char);
char atomic_fetch_or_explicit(volatile atomic_char*, char, memory_order);
char atomic_fetch_or_explicit(atomic_char*, char, memory_order);
char atomic_fetch_xor(volatile atomic_char*, char);
char atomic_fetch_xor(atomic_char*, char);
char atomic_fetch_xor_explicit(volatile atomic_char*, char, memory_order);
char atomic_fetch_xor_explicit(atomic_char*, char, memory_order);

// atomic_schar

typedef struct atomic_schar
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(signed char, memory_order = memory_order_seq_cst) volatile;
    void store(signed char, memory_order = memory_order_seq_cst);
    signed char load(memory_order = memory_order_seq_cst) const volatile;
    signed char load(memory_order = memory_order_seq_cst) const;
    operator signed char() const volatile;
    operator signed char() const;
    signed char exchange(signed char,
    memory_order = memory_order_seq_cst) volatile;
    signed char exchange(signed char, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(signed char&, signed char, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(signed char&, signed char, memory_order,
                               memory_order);
    bool compare_exchange_strong(signed char&, signed char, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(signed char&, signed char, memory_order,
                                 memory_order);
    bool compare_exchange_weak(signed char&, signed char,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(signed char&, signed char,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(signed char&, signed char,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(signed char&, signed char,
                                 memory_order = memory_order_seq_cst);
    signed char fetch_add(signed char,
                          memory_order = memory_order_seq_cst) volatile;
    signed char fetch_add(signed char, memory_order = memory_order_seq_cst);
    signed char fetch_sub(signed char,
                          memory_order = memory_order_seq_cst) volatile;
    signed char fetch_sub(signed char, memory_order = memory_order_seq_cst);
    signed char fetch_and(signed char,
                          memory_order = memory_order_seq_cst) volatile;
    signed char fetch_and(signed char, memory_order = memory_order_seq_cst);
    signed char fetch_or(signed char,
                         memory_order = memory_order_seq_cst) volatile;
    signed char fetch_or(signed char, memory_order = memory_order_seq_cst);
    signed char fetch_xor(signed char,
                          memory_order = memory_order_seq_cst) volatile;
    signed char fetch_xor(signed char, memory_order = memory_order_seq_cst);
    atomic_schar() = default;
    constexpr atomic_schar(signed char);
    atomic_schar(const atomic_schar&) = delete;
    atomic_schar& operator=(const atomic_schar&) = delete;
    atomic_schar& operator=(const atomic_schar&) volatile = delete;
    signed char operator=(signed char) volatile;
    signed char operator=(signed char);
    signed char operator++(int) volatile;
    signed char operator++(int);
    signed char operator--(int) volatile;
    signed char operator--(int);
    signed char operator++() volatile;
    signed char operator++();
    signed char operator--() volatile;
    signed char operator--();
    signed char operator+=(signed char) volatile;
    signed char operator+=(signed char);
    signed char operator-=(signed char) volatile;
    signed char operator-=(signed char);
    signed char operator&=(signed char) volatile;
    signed char operator&=(signed char);
    signed char operator|=(signed char) volatile;
    signed char operator|=(signed char);
    signed char operator^=(signed char) volatile;
    signed char operator^=(signed char);
} atomic_schar;

bool atomic_is_lock_free(const volatile atomic_schar*);
bool atomic_is_lock_free(const atomic_schar*);
void atomic_init(volatile atomic_schar*, itype);
void atomic_init(atomic_schar*, itype);
void atomic_store(volatile atomic_schar*, signed char);
void atomic_store(atomic_schar*, signed char);
void atomic_store_explicit(volatile atomic_schar*, signed char, memory_order);
void atomic_store_explicit(atomic_schar*, signed char, memory_order);
signed char atomic_load(const volatile atomic_schar*);
signed char atomic_load(const atomic_schar*);
signed char atomic_load_explicit(const volatile atomic_schar*, memory_order);
signed char atomic_load_explicit(const atomic_schar*, memory_order);
signed char atomic_exchange(volatile atomic_schar*, signed char);
signed char atomic_exchange(atomic_schar*, signed char);
signed char atomic_exchange_explicit(volatile atomic_schar*, signed char,
                                     memory_order);
signed char atomic_exchange_explicit(atomic_schar*, signed char, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_schar*, signed char*,
                                  signed char);
bool atomic_compare_exchange_weak(atomic_schar*, signed char*, signed char);
bool atomic_compare_exchange_strong(volatile atomic_schar*, signed char*,
                                    signed char);
bool atomic_compare_exchange_strong(atomic_schar*, signed char*, signed char);
bool atomic_compare_exchange_weak_explicit(volatile atomic_schar*, signed char*,
                                           signed char, memory_order,
                                           memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_schar*, signed char*,
                                           signed char, memory_order,
                                           memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_schar*,
                                             signed char*, signed char,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_schar*, signed char*,
                                             signed char, memory_order, memory_order);
signed char atomic_fetch_add(volatile atomic_schar*, signed char);
signed char atomic_fetch_add(atomic_schar*, signed char);
signed char atomic_fetch_add_explicit(volatile atomic_schar*, signed char,
                                      memory_order);
signed char atomic_fetch_add_explicit(atomic_schar*, signed char, memory_order);
signed char atomic_fetch_sub(volatile atomic_schar*, signed char);
signed char atomic_fetch_sub(atomic_schar*, signed char);
signed char atomic_fetch_sub_explicit(volatile atomic_schar*, signed char,
                                      memory_order);
signed char atomic_fetch_sub_explicit(atomic_schar*, signed char, memory_order);
signed char atomic_fetch_and(volatile atomic_schar*, signed char);
signed char atomic_fetch_and(atomic_schar*, signed char);
signed char atomic_fetch_and_explicit(volatile atomic_schar*, signed char,
                                      memory_order);
signed char atomic_fetch_and_explicit(atomic_schar*, signed char, memory_order);
signed char atomic_fetch_or(volatile atomic_schar*, signed char);
signed char atomic_fetch_or(atomic_schar*, signed char);
signed char atomic_fetch_or_explicit(volatile atomic_schar*, signed char,
                                     memory_order);
signed char atomic_fetch_or_explicit(atomic_schar*, signed char, memory_order);
signed char atomic_fetch_xor(volatile atomic_schar*, signed char);
signed char atomic_fetch_xor(atomic_schar*, signed char);
signed char atomic_fetch_xor_explicit(volatile atomic_schar*, signed char,
                                      memory_order);
signed char atomic_fetch_xor_explicit(atomic_schar*, signed char, memory_order);

// atomic_uchar

typedef struct atomic_uchar
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(unsigned char, memory_order = memory_order_seq_cst) volatile;
    void store(unsigned char, memory_order = memory_order_seq_cst);
    unsigned char load(memory_order = memory_order_seq_cst) const volatile;
    unsigned char load(memory_order = memory_order_seq_cst) const;
    operator unsigned char() const volatile;
    operator unsigned char() const;
    unsigned char exchange(unsigned char,
    memory_order = memory_order_seq_cst) volatile;
    unsigned char exchange(unsigned char, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(unsigned char&, unsigned char, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(unsigned char&, unsigned char, memory_order,
                               memory_order);
    bool compare_exchange_strong(unsigned char&, unsigned char, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(unsigned char&, unsigned char, memory_order,
                                 memory_order);
    bool compare_exchange_weak(unsigned char&, unsigned char,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(unsigned char&, unsigned char,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(unsigned char&, unsigned char,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(unsigned char&, unsigned char,
                                 memory_order = memory_order_seq_cst);
    unsigned char fetch_add(unsigned char,
                            memory_order = memory_order_seq_cst) volatile;
    unsigned char fetch_add(unsigned char, memory_order = memory_order_seq_cst);
    unsigned char fetch_sub(unsigned char,
                            memory_order = memory_order_seq_cst) volatile;
    unsigned char fetch_sub(unsigned char, memory_order = memory_order_seq_cst);
    unsigned char fetch_and(unsigned char,
                            memory_order = memory_order_seq_cst) volatile;
    unsigned char fetch_and(unsigned char, memory_order = memory_order_seq_cst);
    unsigned char fetch_or(unsigned char,
                           memory_order = memory_order_seq_cst) volatile;
    unsigned char fetch_or(unsigned char, memory_order = memory_order_seq_cst);
    unsigned char fetch_xor(unsigned char,
                            memory_order = memory_order_seq_cst) volatile;
    unsigned char fetch_xor(unsigned char, memory_order = memory_order_seq_cst);
    atomic_uchar() = default;
    constexpr atomic_uchar(unsigned char);
    atomic_uchar(const atomic_uchar&) = delete;
    atomic_uchar& operator=(const atomic_uchar&) = delete;
    atomic_uchar& operator=(const atomic_uchar&) volatile = delete;
    unsigned char operator=(unsigned char) volatile;
    unsigned char operator=(unsigned char);
    unsigned char operator++(int) volatile;
    unsigned char operator++(int);
    unsigned char operator--(int) volatile;
    unsigned char operator--(int);
    unsigned char operator++() volatile;
    unsigned char operator++();
    unsigned char operator--() volatile;
    unsigned char operator--();
    unsigned char operator+=(unsigned char) volatile;
    unsigned char operator+=(unsigned char);
    unsigned char operator-=(unsigned char) volatile;
    unsigned char operator-=(unsigned char);
    unsigned char operator&=(unsigned char) volatile;
    unsigned char operator&=(unsigned char);
    unsigned char operator|=(unsigned char) volatile;
    unsigned char operator|=(unsigned char);
    unsigned char operator^=(unsigned char) volatile;
    unsigned char operator^=(unsigned char);
} atomic_uchar;

bool atomic_is_lock_free(const volatile atomic_uchar*);
bool atomic_is_lock_free(const atomic_uchar*);
void atomic_init(volatile atomic_uchar*, itype);
void atomic_init(atomic_uchar*, itype);
void atomic_store(volatile atomic_uchar*, unsigned char);
void atomic_store(atomic_uchar*, unsigned char);
void atomic_store_explicit(volatile atomic_uchar*, unsigned char, memory_order);
void atomic_store_explicit(atomic_uchar*, unsigned char, memory_order);
unsigned char atomic_load(const volatile atomic_uchar*);
unsigned char atomic_load(const atomic_uchar*);
unsigned char atomic_load_explicit(const volatile atomic_uchar*, memory_order);
unsigned char atomic_load_explicit(const atomic_uchar*, memory_order);
unsigned char atomic_exchange(volatile atomic_uchar*, unsigned char);
unsigned char atomic_exchange(atomic_uchar*, unsigned char);
unsigned char atomic_exchange_explicit(volatile atomic_uchar*, unsigned char,
                                       memory_order);
unsigned char atomic_exchange_explicit(atomic_uchar*, unsigned char,
                                       memory_order);
bool atomic_compare_exchange_weak(volatile atomic_uchar*, unsigned char*,
                                  unsigned char);
bool atomic_compare_exchange_weak(atomic_uchar*, unsigned char*, unsigned char);
bool atomic_compare_exchange_strong(volatile atomic_uchar*, unsigned char*,
                                    unsigned char);
bool atomic_compare_exchange_strong(atomic_uchar*, unsigned char*,
                                    unsigned char);
bool atomic_compare_exchange_weak_explicit(volatile atomic_uchar*,
                                           unsigned char*, unsigned char,
                                           memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_uchar*, unsigned char*,
                                           unsigned char, memory_order,
                                           memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_uchar*,
                                             unsigned char*, unsigned char,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_uchar*, unsigned char*,
                                             unsigned char, memory_order,
                                             memory_order);
unsigned char atomic_fetch_add(volatile atomic_uchar*, unsigned char);
unsigned char atomic_fetch_add(atomic_uchar*, unsigned char);
unsigned char atomic_fetch_add_explicit(volatile atomic_uchar*, unsigned char,
                                        memory_order);
unsigned char atomic_fetch_add_explicit(atomic_uchar*, unsigned char,
                                        memory_order);
unsigned char atomic_fetch_sub(volatile atomic_uchar*, unsigned char);
unsigned char atomic_fetch_sub(atomic_uchar*, unsigned char);
unsigned char atomic_fetch_sub_explicit(volatile atomic_uchar*, unsigned char,
                                        memory_order);
unsigned char atomic_fetch_sub_explicit(atomic_uchar*, unsigned char,
                                        memory_order);
unsigned char atomic_fetch_and(volatile atomic_uchar*, unsigned char);
unsigned char atomic_fetch_and(atomic_uchar*, unsigned char);
unsigned char atomic_fetch_and_explicit(volatile atomic_uchar*, unsigned char,
                                        memory_order);
unsigned char atomic_fetch_and_explicit(atomic_uchar*, unsigned char,
                                        memory_order);
unsigned char atomic_fetch_or(volatile atomic_uchar*, unsigned char);
unsigned char atomic_fetch_or(atomic_uchar*, unsigned char);
unsigned char atomic_fetch_or_explicit(volatile atomic_uchar*, unsigned char,
                                       memory_order);
unsigned char atomic_fetch_or_explicit(atomic_uchar*, unsigned char,
                                       memory_order);
unsigned char atomic_fetch_xor(volatile atomic_uchar*, unsigned char);
unsigned char atomic_fetch_xor(atomic_uchar*, unsigned char);
unsigned char atomic_fetch_xor_explicit(volatile atomic_uchar*, unsigned char,
                                        memory_order);
unsigned char atomic_fetch_xor_explicit(atomic_uchar*, unsigned char,
                                        memory_order);

// atomic_short

typedef struct atomic_short
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(short, memory_order = memory_order_seq_cst) volatile;
    void store(short, memory_order = memory_order_seq_cst);
    short load(memory_order = memory_order_seq_cst) const volatile;
    short load(memory_order = memory_order_seq_cst) const;
    operator short() const volatile;
    operator short() const;
    short exchange(short,
    memory_order = memory_order_seq_cst) volatile;
    short exchange(short, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(short&, short, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(short&, short, memory_order, memory_order);
    bool compare_exchange_strong(short&, short, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(short&, short, memory_order, memory_order);
    bool compare_exchange_weak(short&, short,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(short&, short,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(short&, short,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(short&, short,
                                 memory_order = memory_order_seq_cst);
    short fetch_add(short, memory_order = memory_order_seq_cst) volatile;
    short fetch_add(short, memory_order = memory_order_seq_cst);
    short fetch_sub(short, memory_order = memory_order_seq_cst) volatile;
    short fetch_sub(short, memory_order = memory_order_seq_cst);
    short fetch_and(short, memory_order = memory_order_seq_cst) volatile;
    short fetch_and(short, memory_order = memory_order_seq_cst);
    short fetch_or(short, memory_order = memory_order_seq_cst) volatile;
    short fetch_or(short, memory_order = memory_order_seq_cst);
    short fetch_xor(short, memory_order = memory_order_seq_cst) volatile;
    short fetch_xor(short, memory_order = memory_order_seq_cst);
    atomic_short() = default;
    constexpr atomic_short(short);
    atomic_short(const atomic_short&) = delete;
    atomic_short& operator=(const atomic_short&) = delete;
    atomic_short& operator=(const atomic_short&) volatile = delete;
    short operator=(short) volatile;
    short operator=(short);
    short operator++(int) volatile;
    short operator++(int);
    short operator--(int) volatile;
    short operator--(int);
    short operator++() volatile;
    short operator++();
    short operator--() volatile;
    short operator--();
    short operator+=(short) volatile;
    short operator+=(short);
    short operator-=(short) volatile;
    short operator-=(short);
    short operator&=(short) volatile;
    short operator&=(short);
    short operator|=(short) volatile;
    short operator|=(short);
    short operator^=(short) volatile;
    short operator^=(short);
} atomic_short;

bool atomic_is_lock_free(const volatile atomic_short*);
bool atomic_is_lock_free(const atomic_short*);
void atomic_init(volatile atomic_short*, itype);
void atomic_init(atomic_short*, itype);
void atomic_store(volatile atomic_short*, short);
void atomic_store(atomic_short*, short);
void atomic_store_explicit(volatile atomic_short*, short, memory_order);
void atomic_store_explicit(atomic_short*, short, memory_order);
short atomic_load(const volatile atomic_short*);
short atomic_load(const atomic_short*);
short atomic_load_explicit(const volatile atomic_short*, memory_order);
short atomic_load_explicit(const atomic_short*, memory_order);
short atomic_exchange(volatile atomic_short*, short);
short atomic_exchange(atomic_short*, short);
short atomic_exchange_explicit(volatile atomic_short*, short, memory_order);
short atomic_exchange_explicit(atomic_short*, short, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_short*, short*, short);
bool atomic_compare_exchange_weak(atomic_short*, short*, short);
bool atomic_compare_exchange_strong(volatile atomic_short*, short*, short);
bool atomic_compare_exchange_strong(atomic_short*, short*, short);
bool atomic_compare_exchange_weak_explicit(volatile atomic_short*, short*,
                                           short, memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_short*, short*, short,
                                           memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_short*, short*,
                                             short, memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_short*, short*, short,
                                             memory_order, memory_order);
short atomic_fetch_add(volatile atomic_short*, short);
short atomic_fetch_add(atomic_short*, short);
short atomic_fetch_add_explicit(volatile atomic_short*, short, memory_order);
short atomic_fetch_add_explicit(atomic_short*, short, memory_order);
short atomic_fetch_sub(volatile atomic_short*, short);
short atomic_fetch_sub(atomic_short*, short);
short atomic_fetch_sub_explicit(volatile atomic_short*, short, memory_order);
short atomic_fetch_sub_explicit(atomic_short*, short, memory_order);
short atomic_fetch_and(volatile atomic_short*, short);
short atomic_fetch_and(atomic_short*, short);
short atomic_fetch_and_explicit(volatile atomic_short*, short, memory_order);
short atomic_fetch_and_explicit(atomic_short*, short, memory_order);
short atomic_fetch_or(volatile atomic_short*, short);
short atomic_fetch_or(atomic_short*, short);
short atomic_fetch_or_explicit(volatile atomic_short*, short, memory_order);
short atomic_fetch_or_explicit(atomic_short*, short, memory_order);
short atomic_fetch_xor(volatile atomic_short*, short);
short atomic_fetch_xor(atomic_short*, short);
short atomic_fetch_xor_explicit(volatile atomic_short*, short, memory_order);
short atomic_fetch_xor_explicit(atomic_short*, short, memory_order);

// atomic_ushort

typedef struct atomic_ushort
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(unsigned short, memory_order = memory_order_seq_cst) volatile;
    void store(unsigned short, memory_order = memory_order_seq_cst);
    unsigned short load(memory_order = memory_order_seq_cst) const volatile;
    unsigned short load(memory_order = memory_order_seq_cst) const;
    operator unsigned short() const volatile;
    operator unsigned short() const;
    unsigned short exchange(unsigned short,
    memory_order = memory_order_seq_cst) volatile;
    unsigned short exchange(unsigned short,
                            memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(unsigned short&, unsigned short, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(unsigned short&, unsigned short, memory_order,
                               memory_order);
    bool compare_exchange_strong(unsigned short&, unsigned short, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(unsigned short&, unsigned short, memory_order,
                                 memory_order);
    bool compare_exchange_weak(unsigned short&, unsigned short,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(unsigned short&, unsigned short,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(unsigned short&, unsigned short,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(unsigned short&, unsigned short,
                                 memory_order = memory_order_seq_cst);
    unsigned short fetch_add(unsigned short,
                             memory_order = memory_order_seq_cst) volatile;
    unsigned short fetch_add(unsigned short,
                             memory_order = memory_order_seq_cst);
    unsigned short fetch_sub(unsigned short,
                             memory_order = memory_order_seq_cst) volatile;
    unsigned short fetch_sub(unsigned short,
                             memory_order = memory_order_seq_cst);
    unsigned short fetch_and(unsigned short,
                             memory_order = memory_order_seq_cst) volatile;
    unsigned short fetch_and(unsigned short,
                             memory_order = memory_order_seq_cst);
    unsigned short fetch_or(unsigned short,
                            memory_order = memory_order_seq_cst) volatile;
    unsigned short fetch_or(unsigned short,
                            memory_order = memory_order_seq_cst);
    unsigned short fetch_xor(unsigned short,
                             memory_order = memory_order_seq_cst) volatile;
    unsigned short fetch_xor(unsigned short,
                             memory_order = memory_order_seq_cst);
    atomic_ushort() = default;
    constexpr atomic_ushort(unsigned short);
    atomic_ushort(const atomic_ushort&) = delete;
    atomic_ushort& operator=(const atomic_ushort&) = delete;
    atomic_ushort& operator=(const atomic_ushort&) volatile = delete;
    unsigned short operator=(unsigned short) volatile;
    unsigned short operator=(unsigned short);
    unsigned short operator++(int) volatile;
    unsigned short operator++(int);
    unsigned short operator--(int) volatile;
    unsigned short operator--(int);
    unsigned short operator++() volatile;
    unsigned short operator++();
    unsigned short operator--() volatile;
    unsigned short operator--();
    unsigned short operator+=(unsigned short) volatile;
    unsigned short operator+=(unsigned short);
    unsigned short operator-=(unsigned short) volatile;
    unsigned short operator-=(unsigned short);
    unsigned short operator&=(unsigned short) volatile;
    unsigned short operator&=(unsigned short);
    unsigned short operator|=(unsigned short) volatile;
    unsigned short operator|=(unsigned short);
    unsigned short operator^=(unsigned short) volatile;
    unsigned short operator^=(unsigned short);
} atomic_ushort;

bool atomic_is_lock_free(const volatile atomic_ushort*);
bool atomic_is_lock_free(const atomic_ushort*);
void atomic_init(volatile atomic_ushort*, itype);
void atomic_init(atomic_ushort*, itype);
void atomic_store(volatile atomic_ushort*, unsigned short);
void atomic_store(atomic_ushort*, unsigned short);
void atomic_store_explicit(volatile atomic_ushort*, unsigned short,
                           memory_order);
void atomic_store_explicit(atomic_ushort*, unsigned short, memory_order);
unsigned short atomic_load(const volatile atomic_ushort*);
unsigned short atomic_load(const atomic_ushort*);
unsigned short atomic_load_explicit(const volatile atomic_ushort*,
                                    memory_order);
unsigned short atomic_load_explicit(const atomic_ushort*, memory_order);
unsigned short atomic_exchange(volatile atomic_ushort*, unsigned short);
unsigned short atomic_exchange(atomic_ushort*, unsigned short);
unsigned short atomic_exchange_explicit(volatile atomic_ushort*, unsigned short,
                                        memory_order);
unsigned short atomic_exchange_explicit(atomic_ushort*, unsigned short,
                                        memory_order);
bool atomic_compare_exchange_weak(volatile atomic_ushort*, unsigned short*,
                                  unsigned short);
bool atomic_compare_exchange_weak(atomic_ushort*, unsigned short*,
                                  unsigned short);
bool atomic_compare_exchange_strong(volatile atomic_ushort*, unsigned short*,
                                    unsigned short);
bool atomic_compare_exchange_strong(atomic_ushort*, unsigned short*,
                                    unsigned short);
bool atomic_compare_exchange_weak_explicit(volatile atomic_ushort*,
                                           unsigned short*, unsigned short,
                                           memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_ushort*, unsigned short*,
                                           unsigned short, memory_order,
                                           memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_ushort*,
                                             unsigned short*, unsigned short,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_ushort*, unsigned short*,
                                             unsigned short, memory_order,
                                             memory_order);
unsigned short atomic_fetch_add(volatile atomic_ushort*, unsigned short);
unsigned short atomic_fetch_add(atomic_ushort*, unsigned short);
unsigned short atomic_fetch_add_explicit(volatile atomic_ushort*,
                                         unsigned short, memory_order);
unsigned short atomic_fetch_add_explicit(atomic_ushort*, unsigned short,
                                         memory_order);
unsigned short atomic_fetch_sub(volatile atomic_ushort*, unsigned short);
unsigned short atomic_fetch_sub(atomic_ushort*, unsigned short);
unsigned short atomic_fetch_sub_explicit(volatile atomic_ushort*,
                                         unsigned short, memory_order);
unsigned short atomic_fetch_sub_explicit(atomic_ushort*, unsigned short,
                                         memory_order);
unsigned short atomic_fetch_and(volatile atomic_ushort*, unsigned short);
unsigned short atomic_fetch_and(atomic_ushort*, unsigned short);
unsigned short atomic_fetch_and_explicit(volatile atomic_ushort*,
                                         unsigned short, memory_order);
unsigned short atomic_fetch_and_explicit(atomic_ushort*, unsigned short,
                                         memory_order);
unsigned short atomic_fetch_or(volatile atomic_ushort*, unsigned short);
unsigned short atomic_fetch_or(atomic_ushort*, unsigned short);
unsigned short atomic_fetch_or_explicit(volatile atomic_ushort*, unsigned short,
                                        memory_order);
unsigned short atomic_fetch_or_explicit(atomic_ushort*, unsigned short,
                                        memory_order);
unsigned short atomic_fetch_xor(volatile atomic_ushort*, unsigned short);
unsigned short atomic_fetch_xor(atomic_ushort*, unsigned short);
unsigned short atomic_fetch_xor_explicit(volatile atomic_ushort*,
                                         unsigned short, memory_order);
unsigned short atomic_fetch_xor_explicit(atomic_ushort*, unsigned short,
                                         memory_order);

// atomic_int

typedef struct atomic_int
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(int, memory_order = memory_order_seq_cst) volatile;
    void store(int, memory_order = memory_order_seq_cst);
    int load(memory_order = memory_order_seq_cst) const volatile;
    int load(memory_order = memory_order_seq_cst) const;
    operator int() const volatile;
    operator int() const;
    int exchange(int,
    memory_order = memory_order_seq_cst) volatile;
    int exchange(int, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(int&, int, memory_order, memory_order) volatile;
    bool compare_exchange_weak(int&, int, memory_order, memory_order);
    bool compare_exchange_strong(int&, int, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(int&, int, memory_order, memory_order);
    bool compare_exchange_weak(int&, int,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(int&, int, memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(int&, int,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(int&, int,
                                 memory_order = memory_order_seq_cst);
    int fetch_add(int, memory_order = memory_order_seq_cst) volatile;
    int fetch_add(int, memory_order = memory_order_seq_cst);
    int fetch_sub(int, memory_order = memory_order_seq_cst) volatile;
    int fetch_sub(int, memory_order = memory_order_seq_cst);
    int fetch_and(int, memory_order = memory_order_seq_cst) volatile;
    int fetch_and(int, memory_order = memory_order_seq_cst);
    int fetch_or(int, memory_order = memory_order_seq_cst) volatile;
    int fetch_or(int, memory_order = memory_order_seq_cst);
    int fetch_xor(int, memory_order = memory_order_seq_cst) volatile;
    int fetch_xor(int, memory_order = memory_order_seq_cst);
    atomic_int() = default;
    constexpr atomic_int(int);
    atomic_int(const atomic_int&) = delete;
    atomic_int& operator=(const atomic_int&) = delete;
    atomic_int& operator=(const atomic_int&) volatile = delete;
    int operator=(int) volatile;
    int operator=(int);
    int operator++(int) volatile;
    int operator++(int);
    int operator--(int) volatile;
    int operator--(int);
    int operator++() volatile;
    int operator++();
    int operator--() volatile;
    int operator--();
    int operator+=(int) volatile;
    int operator+=(int);
    int operator-=(int) volatile;
    int operator-=(int);
    int operator&=(int) volatile;
    int operator&=(int);
    int operator|=(int) volatile;
    int operator|=(int);
    int operator^=(int) volatile;
    int operator^=(int);
} atomic_int;

bool atomic_is_lock_free(const volatile atomic_int*);
bool atomic_is_lock_free(const atomic_int*);
void atomic_init(volatile atomic_int*, itype);
void atomic_init(atomic_int*, itype);
void atomic_store(volatile atomic_int*, int);
void atomic_store(atomic_int*, int);
void atomic_store_explicit(volatile atomic_int*, int, memory_order);
void atomic_store_explicit(atomic_int*, int, memory_order);
int atomic_load(const volatile atomic_int*);
int atomic_load(const atomic_int*);
int atomic_load_explicit(const volatile atomic_int*, memory_order);
int atomic_load_explicit(const atomic_int*, memory_order);
int atomic_exchange(volatile atomic_int*, int);
int atomic_exchange(atomic_int*, int);
int atomic_exchange_explicit(volatile atomic_int*, int, memory_order);
int atomic_exchange_explicit(atomic_int*, int, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_int*, int*, int);
bool atomic_compare_exchange_weak(atomic_int*, int*, int);
bool atomic_compare_exchange_strong(volatile atomic_int*, int*, int);
bool atomic_compare_exchange_strong(atomic_int*, int*, int);
bool atomic_compare_exchange_weak_explicit(volatile atomic_int*, int*, int,
                                           memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_int*, int*, int, memory_order,
                                           memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_int*, int*, int,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_int*, int*, int,
                                             memory_order, memory_order);
int atomic_fetch_add(volatile atomic_int*, int);
int atomic_fetch_add(atomic_int*, int);
int atomic_fetch_add_explicit(volatile atomic_int*, int, memory_order);
int atomic_fetch_add_explicit(atomic_int*, int, memory_order);
int atomic_fetch_sub(volatile atomic_int*, int);
int atomic_fetch_sub(atomic_int*, int);
int atomic_fetch_sub_explicit(volatile atomic_int*, int, memory_order);
int atomic_fetch_sub_explicit(atomic_int*, int, memory_order);
int atomic_fetch_and(volatile atomic_int*, int);
int atomic_fetch_and(atomic_int*, int);
int atomic_fetch_and_explicit(volatile atomic_int*, int, memory_order);
int atomic_fetch_and_explicit(atomic_int*, int, memory_order);
int atomic_fetch_or(volatile atomic_int*, int);
int atomic_fetch_or(atomic_int*, int);
int atomic_fetch_or_explicit(volatile atomic_int*, int, memory_order);
int atomic_fetch_or_explicit(atomic_int*, int, memory_order);
int atomic_fetch_xor(volatile atomic_int*, int);
int atomic_fetch_xor(atomic_int*, int);
int atomic_fetch_xor_explicit(volatile atomic_int*, int, memory_order);
int atomic_fetch_xor_explicit(atomic_int*, int, memory_order);

// atomic_uint

typedef struct atomic_uint
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(unsigned int, memory_order = memory_order_seq_cst) volatile;
    void store(unsigned int, memory_order = memory_order_seq_cst);
    unsigned int load(memory_order = memory_order_seq_cst) const volatile;
    unsigned int load(memory_order = memory_order_seq_cst) const;
    operator unsigned int() const volatile;
    operator unsigned int() const;
    unsigned int exchange(unsigned int,
    memory_order = memory_order_seq_cst) volatile;
    unsigned int exchange(unsigned int, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(unsigned int&, unsigned int, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(unsigned int&, unsigned int, memory_order,
                               memory_order);
    bool compare_exchange_strong(unsigned int&, unsigned int, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(unsigned int&, unsigned int, memory_order,
                                 memory_order);
    bool compare_exchange_weak(unsigned int&, unsigned int,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(unsigned int&, unsigned int,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(unsigned int&, unsigned int,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(unsigned int&, unsigned int,
                                 memory_order = memory_order_seq_cst);
    unsigned int fetch_add(unsigned int,
                           memory_order = memory_order_seq_cst) volatile;
    unsigned int fetch_add(unsigned int, memory_order = memory_order_seq_cst);
    unsigned int fetch_sub(unsigned int,
                           memory_order = memory_order_seq_cst) volatile;
    unsigned int fetch_sub(unsigned int, memory_order = memory_order_seq_cst);
    unsigned int fetch_and(unsigned int,
                           memory_order = memory_order_seq_cst) volatile;
    unsigned int fetch_and(unsigned int, memory_order = memory_order_seq_cst);
    unsigned int fetch_or(unsigned int,
                          memory_order = memory_order_seq_cst) volatile;
    unsigned int fetch_or(unsigned int, memory_order = memory_order_seq_cst);
    unsigned int fetch_xor(unsigned int,
                           memory_order = memory_order_seq_cst) volatile;
    unsigned int fetch_xor(unsigned int, memory_order = memory_order_seq_cst);
    atomic_uint() = default;
    constexpr atomic_uint(unsigned int);
    atomic_uint(const atomic_uint&) = delete;
    atomic_uint& operator=(const atomic_uint&) = delete;
    atomic_uint& operator=(const atomic_uint&) volatile = delete;
    unsigned int operator=(unsigned int) volatile;
    unsigned int operator=(unsigned int);
    unsigned int operator++(int) volatile;
    unsigned int operator++(int);
    unsigned int operator--(int) volatile;
    unsigned int operator--(int);
    unsigned int operator++() volatile;
    unsigned int operator++();
    unsigned int operator--() volatile;
    unsigned int operator--();
    unsigned int operator+=(unsigned int) volatile;
    unsigned int operator+=(unsigned int);
    unsigned int operator-=(unsigned int) volatile;
    unsigned int operator-=(unsigned int);
    unsigned int operator&=(unsigned int) volatile;
    unsigned int operator&=(unsigned int);
    unsigned int operator|=(unsigned int) volatile;
    unsigned int operator|=(unsigned int);
    unsigned int operator^=(unsigned int) volatile;
    unsigned int operator^=(unsigned int);
} atomic_uint;

bool atomic_is_lock_free(const volatile atomic_uint*);
bool atomic_is_lock_free(const atomic_uint*);
void atomic_init(volatile atomic_uint*, itype);
void atomic_init(atomic_uint*, itype);
void atomic_store(volatile atomic_uint*, unsigned int);
void atomic_store(atomic_uint*, unsigned int);
void atomic_store_explicit(volatile atomic_uint*, unsigned int, memory_order);
void atomic_store_explicit(atomic_uint*, unsigned int, memory_order);
unsigned int atomic_load(const volatile atomic_uint*);
unsigned int atomic_load(const atomic_uint*);
unsigned int atomic_load_explicit(const volatile atomic_uint*, memory_order);
unsigned int atomic_load_explicit(const atomic_uint*, memory_order);
unsigned int atomic_exchange(volatile atomic_uint*, unsigned int);
unsigned int atomic_exchange(atomic_uint*, unsigned int);
unsigned int atomic_exchange_explicit(volatile atomic_uint*, unsigned int,
                                      memory_order);
unsigned int atomic_exchange_explicit(atomic_uint*, unsigned int, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_uint*, unsigned int*,
                                  unsigned int);
bool atomic_compare_exchange_weak(atomic_uint*, unsigned int*, unsigned int);
bool atomic_compare_exchange_strong(volatile atomic_uint*, unsigned int*,
                                    unsigned int);
bool atomic_compare_exchange_strong(atomic_uint*, unsigned int*, unsigned int);
bool atomic_compare_exchange_weak_explicit(volatile atomic_uint*, unsigned int*,
                                           unsigned int, memory_order,
                                           memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_uint*, unsigned int*,
                                           unsigned int, memory_order,
                                           memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_uint*,
                                             unsigned int*, unsigned int,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_uint*, unsigned int*,
                                             unsigned int, memory_order, 
                                             memory_order);
unsigned int atomic_fetch_add(volatile atomic_uint*, unsigned int);
unsigned int atomic_fetch_add(atomic_uint*, unsigned int);
unsigned int atomic_fetch_add_explicit(volatile atomic_uint*, unsigned int,
                                       memory_order);
unsigned int atomic_fetch_add_explicit(atomic_uint*, unsigned int,
                                       memory_order);
unsigned int atomic_fetch_sub(volatile atomic_uint*, unsigned int);
unsigned int atomic_fetch_sub(atomic_uint*, unsigned int);
unsigned int atomic_fetch_sub_explicit(volatile atomic_uint*, unsigned int,
                                       memory_order);
unsigned int atomic_fetch_sub_explicit(atomic_uint*, unsigned int,
                                       memory_order);
unsigned int atomic_fetch_and(volatile atomic_uint*, unsigned int);
unsigned int atomic_fetch_and(atomic_uint*, unsigned int);
unsigned int atomic_fetch_and_explicit(volatile atomic_uint*, unsigned int,
                                       memory_order);
unsigned int atomic_fetch_and_explicit(atomic_uint*, unsigned int,
                                       memory_order);
unsigned int atomic_fetch_or(volatile atomic_uint*, unsigned int);
unsigned int atomic_fetch_or(atomic_uint*, unsigned int);
unsigned int atomic_fetch_or_explicit(volatile atomic_uint*, unsigned int,
                                      memory_order);
unsigned int atomic_fetch_or_explicit(atomic_uint*, unsigned int, memory_order);
unsigned int atomic_fetch_xor(volatile atomic_uint*, unsigned int);
unsigned int atomic_fetch_xor(atomic_uint*, unsigned int);
unsigned int atomic_fetch_xor_explicit(volatile atomic_uint*, unsigned int,
                                       memory_order);
unsigned int atomic_fetch_xor_explicit(atomic_uint*, unsigned int,
                                       memory_order);

// atomic_long

typedef struct atomic_long
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(long, memory_order = memory_order_seq_cst) volatile;
    void store(long, memory_order = memory_order_seq_cst);
    long load(memory_order = memory_order_seq_cst) const volatile;
    long load(memory_order = memory_order_seq_cst) const;
    operator long() const volatile;
    operator long() const;
    long exchange(long,
    memory_order = memory_order_seq_cst) volatile;
    long exchange(long, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(long&, long, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(long&, long, memory_order, memory_order);
    bool compare_exchange_strong(long&, long, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(long&, long, memory_order, memory_order);
    bool compare_exchange_weak(long&, long,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(long&, long,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(long&, long,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(long&, long,
                                 memory_order = memory_order_seq_cst);
    long fetch_add(long, memory_order = memory_order_seq_cst) volatile;
    long fetch_add(long, memory_order = memory_order_seq_cst);
    long fetch_sub(long, memory_order = memory_order_seq_cst) volatile;
    long fetch_sub(long, memory_order = memory_order_seq_cst);
    long fetch_and(long, memory_order = memory_order_seq_cst) volatile;
    long fetch_and(long, memory_order = memory_order_seq_cst);
    long fetch_or(long, memory_order = memory_order_seq_cst) volatile;
    long fetch_or(long, memory_order = memory_order_seq_cst);
    long fetch_xor(long, memory_order = memory_order_seq_cst) volatile;
    long fetch_xor(long, memory_order = memory_order_seq_cst);
    atomic_long() = default;
    constexpr atomic_long(long);
    atomic_long(const atomic_long&) = delete;
    atomic_long& operator=(const atomic_long&) = delete;
    atomic_long& operator=(const atomic_long&) volatile = delete;
    long operator=(long) volatile;
    long operator=(long);
    long operator++(int) volatile;
    long operator++(int);
    long operator--(int) volatile;
    long operator--(int);
    long operator++() volatile;
    long operator++();
    long operator--() volatile;
    long operator--();
    long operator+=(long) volatile;
    long operator+=(long);
    long operator-=(long) volatile;
    long operator-=(long);
    long operator&=(long) volatile;
    long operator&=(long);
    long operator|=(long) volatile;
    long operator|=(long);
    long operator^=(long) volatile;
    long operator^=(long);
} atomic_long;

bool atomic_is_lock_free(const volatile atomic_long*);
bool atomic_is_lock_free(const atomic_long*);
void atomic_init(volatile atomic_long*, itype);
void atomic_init(atomic_long*, itype);
void atomic_store(volatile atomic_long*, long);
void atomic_store(atomic_long*, long);
void atomic_store_explicit(volatile atomic_long*, long, memory_order);
void atomic_store_explicit(atomic_long*, long, memory_order);
long atomic_load(const volatile atomic_long*);
long atomic_load(const atomic_long*);
long atomic_load_explicit(const volatile atomic_long*, memory_order);
long atomic_load_explicit(const atomic_long*, memory_order);
long atomic_exchange(volatile atomic_long*, long);
long atomic_exchange(atomic_long*, long);
long atomic_exchange_explicit(volatile atomic_long*, long, memory_order);
long atomic_exchange_explicit(atomic_long*, long, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_long*, long*, long);
bool atomic_compare_exchange_weak(atomic_long*, long*, long);
bool atomic_compare_exchange_strong(volatile atomic_long*, long*, long);
bool atomic_compare_exchange_strong(atomic_long*, long*, long);
bool atomic_compare_exchange_weak_explicit(volatile atomic_long*, long*, long,
                                           memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_long*, long*, long,
                                           memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_long*, long*, long,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_long*, long*, long,
                                             memory_order, memory_order);
long atomic_fetch_add(volatile atomic_long*, long);
long atomic_fetch_add(atomic_long*, long);
long atomic_fetch_add_explicit(volatile atomic_long*, long, memory_order);
long atomic_fetch_add_explicit(atomic_long*, long, memory_order);
long atomic_fetch_sub(volatile atomic_long*, long);
long atomic_fetch_sub(atomic_long*, long);
long atomic_fetch_sub_explicit(volatile atomic_long*, long, memory_order);
long atomic_fetch_sub_explicit(atomic_long*, long, memory_order);
long atomic_fetch_and(volatile atomic_long*, long);
long atomic_fetch_and(atomic_long*, long);
long atomic_fetch_and_explicit(volatile atomic_long*, long, memory_order);
long atomic_fetch_and_explicit(atomic_long*, long, memory_order);
long atomic_fetch_or(volatile atomic_long*, long);
long atomic_fetch_or(atomic_long*, long);
long atomic_fetch_or_explicit(volatile atomic_long*, long, memory_order);
long atomic_fetch_or_explicit(atomic_long*, long, memory_order);
long atomic_fetch_xor(volatile atomic_long*, long);
long atomic_fetch_xor(atomic_long*, long);
long atomic_fetch_xor_explicit(volatile atomic_long*, long, memory_order);
long atomic_fetch_xor_explicit(atomic_long*, long, memory_order);

// atomic_ulong

typedef struct atomic_ulong
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(unsigned long, memory_order = memory_order_seq_cst) volatile;
    void store(unsigned long, memory_order = memory_order_seq_cst);
    unsigned long load(memory_order = memory_order_seq_cst) const volatile;
    unsigned long load(memory_order = memory_order_seq_cst) const;
    operator unsigned long() const volatile;
    operator unsigned long() const;
    unsigned long exchange(unsigned long,
    memory_order = memory_order_seq_cst) volatile;
    unsigned long exchange(unsigned long, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(unsigned long&, unsigned long, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(unsigned long&, unsigned long, memory_order,
                               memory_order);
    bool compare_exchange_strong(unsigned long&, unsigned long, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(unsigned long&, unsigned long, memory_order,
                                 memory_order);
    bool compare_exchange_weak(unsigned long&, unsigned long,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(unsigned long&, unsigned long,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(unsigned long&, unsigned long,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(unsigned long&, unsigned long,
                                 memory_order = memory_order_seq_cst);
    unsigned long fetch_add(unsigned long,
                            memory_order = memory_order_seq_cst) volatile;
    unsigned long fetch_add(unsigned long, memory_order = memory_order_seq_cst);
    unsigned long fetch_sub(unsigned long,
                            memory_order = memory_order_seq_cst) volatile;
    unsigned long fetch_sub(unsigned long, memory_order = memory_order_seq_cst);
    unsigned long fetch_and(unsigned long,
                            memory_order = memory_order_seq_cst) volatile;
    unsigned long fetch_and(unsigned long, memory_order = memory_order_seq_cst);
    unsigned long fetch_or(unsigned long,
                           memory_order = memory_order_seq_cst) volatile;
    unsigned long fetch_or(unsigned long, memory_order = memory_order_seq_cst);
    unsigned long fetch_xor(unsigned long,
                            memory_order = memory_order_seq_cst) volatile;
    unsigned long fetch_xor(unsigned long, memory_order = memory_order_seq_cst);
    atomic_ulong() = default;
    constexpr atomic_ulong(unsigned long);
    atomic_ulong(const atomic_ulong&) = delete;
    atomic_ulong& operator=(const atomic_ulong&) = delete;
    atomic_ulong& operator=(const atomic_ulong&) volatile = delete;
    unsigned long operator=(unsigned long) volatile;
    unsigned long operator=(unsigned long);
    unsigned long operator++(int) volatile;
    unsigned long operator++(int);
    unsigned long operator--(int) volatile;
    unsigned long operator--(int);
    unsigned long operator++() volatile;
    unsigned long operator++();
    unsigned long operator--() volatile;
    unsigned long operator--();
    unsigned long operator+=(unsigned long) volatile;
    unsigned long operator+=(unsigned long);
    unsigned long operator-=(unsigned long) volatile;
    unsigned long operator-=(unsigned long);
    unsigned long operator&=(unsigned long) volatile;
    unsigned long operator&=(unsigned long);
    unsigned long operator|=(unsigned long) volatile;
    unsigned long operator|=(unsigned long);
    unsigned long operator^=(unsigned long) volatile;
    unsigned long operator^=(unsigned long);
} atomic_ulong;

bool atomic_is_lock_free(const volatile atomic_ulong*);
bool atomic_is_lock_free(const atomic_ulong*);
void atomic_init(volatile atomic_ulong*, itype);
void atomic_init(atomic_ulong*, itype);
void atomic_store(volatile atomic_ulong*, unsigned long);
void atomic_store(atomic_ulong*, unsigned long);
void atomic_store_explicit(volatile atomic_ulong*, unsigned long, memory_order);
void atomic_store_explicit(atomic_ulong*, unsigned long, memory_order);
unsigned long atomic_load(const volatile atomic_ulong*);
unsigned long atomic_load(const atomic_ulong*);
unsigned long atomic_load_explicit(const volatile atomic_ulong*, memory_order);
unsigned long atomic_load_explicit(const atomic_ulong*, memory_order);
unsigned long atomic_exchange(volatile atomic_ulong*, unsigned long);
unsigned long atomic_exchange(atomic_ulong*, unsigned long);
unsigned long atomic_exchange_explicit(volatile atomic_ulong*, unsigned long,
                                       memory_order);
unsigned long atomic_exchange_explicit(atomic_ulong*, unsigned long,
                                       memory_order);
bool atomic_compare_exchange_weak(volatile atomic_ulong*, unsigned long*,
                                  unsigned long);
bool atomic_compare_exchange_weak(atomic_ulong*, unsigned long*, unsigned long);
bool atomic_compare_exchange_strong(volatile atomic_ulong*, unsigned long*,
                                    unsigned long);
bool atomic_compare_exchange_strong(atomic_ulong*, unsigned long*,
                                    unsigned long);
bool atomic_compare_exchange_weak_explicit(volatile atomic_ulong*,
                                           unsigned long*, unsigned long,
                                           memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_ulong*, unsigned long*,
                                           unsigned long, memory_order,
                                           memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_ulong*,
                                             unsigned long*, unsigned long,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_ulong*, unsigned long*,
                                             unsigned long, memory_order,
                                             memory_order);
unsigned long atomic_fetch_add(volatile atomic_ulong*, unsigned long);
unsigned long atomic_fetch_add(atomic_ulong*, unsigned long);
unsigned long atomic_fetch_add_explicit(volatile atomic_ulong*, unsigned long,
                                        memory_order);
unsigned long atomic_fetch_add_explicit(atomic_ulong*, unsigned long,
                                        memory_order);
unsigned long atomic_fetch_sub(volatile atomic_ulong*, unsigned long);
unsigned long atomic_fetch_sub(atomic_ulong*, unsigned long);
unsigned long atomic_fetch_sub_explicit(volatile atomic_ulong*, unsigned long,
                                        memory_order);
unsigned long atomic_fetch_sub_explicit(atomic_ulong*, unsigned long,
                                        memory_order);
unsigned long atomic_fetch_and(volatile atomic_ulong*, unsigned long);
unsigned long atomic_fetch_and(atomic_ulong*, unsigned long);
unsigned long atomic_fetch_and_explicit(volatile atomic_ulong*, unsigned long,
                                        memory_order);
unsigned long atomic_fetch_and_explicit(atomic_ulong*, unsigned long,
                                        memory_order);
unsigned long atomic_fetch_or(volatile atomic_ulong*, unsigned long);
unsigned long atomic_fetch_or(atomic_ulong*, unsigned long);
unsigned long atomic_fetch_or_explicit(volatile atomic_ulong*, unsigned long,
                                       memory_order);
unsigned long atomic_fetch_or_explicit(atomic_ulong*, unsigned long,
                                       memory_order);
unsigned long atomic_fetch_xor(volatile atomic_ulong*, unsigned long);
unsigned long atomic_fetch_xor(atomic_ulong*, unsigned long);
unsigned long atomic_fetch_xor_explicit(volatile atomic_ulong*, unsigned long,
                                        memory_order);
unsigned long atomic_fetch_xor_explicit(atomic_ulong*, unsigned long,
                                        memory_order);

// atomic_llong

typedef struct atomic_llong
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(long long, memory_order = memory_order_seq_cst) volatile;
    void store(long long, memory_order = memory_order_seq_cst);
    long long load(memory_order = memory_order_seq_cst) const volatile;
    long long load(memory_order = memory_order_seq_cst) const;
    operator long long() const volatile;
    operator long long() const;
    long long exchange(long long,
    memory_order = memory_order_seq_cst) volatile;
    long long exchange(long long, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(long long&, long long, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(long long&, long long, memory_order,
                               memory_order);
    bool compare_exchange_strong(long long&, long long, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(long long&, long long, memory_order,
                                 memory_order);
    bool compare_exchange_weak(long long&, long long,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(long long&, long long,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(long long&, long long,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(long long&, long long,
                                 memory_order = memory_order_seq_cst);
    long long fetch_add(long long,
                        memory_order = memory_order_seq_cst) volatile;
    long long fetch_add(long long, memory_order = memory_order_seq_cst);
    long long fetch_sub(long long,
                        memory_order = memory_order_seq_cst) volatile;
    long long fetch_sub(long long, memory_order = memory_order_seq_cst);
    long long fetch_and(long long,
                        memory_order = memory_order_seq_cst) volatile;
    long long fetch_and(long long, memory_order = memory_order_seq_cst);
    long long fetch_or(long long, memory_order = memory_order_seq_cst) volatile;
    long long fetch_or(long long, memory_order = memory_order_seq_cst);
    long long fetch_xor(long long,
                        memory_order = memory_order_seq_cst) volatile;
    long long fetch_xor(long long, memory_order = memory_order_seq_cst);
    atomic_llong() = default;
    constexpr atomic_llong(long long);
    atomic_llong(const atomic_llong&) = delete;
    atomic_llong& operator=(const atomic_llong&) = delete;
    atomic_llong& operator=(const atomic_llong&) volatile = delete;
    long long operator=(long long) volatile;
    long long operator=(long long);
    long long operator++(int) volatile;
    long long operator++(int);
    long long operator--(int) volatile;
    long long operator--(int);
    long long operator++() volatile;
    long long operator++();
    long long operator--() volatile;
    long long operator--();
    long long operator+=(long long) volatile;
    long long operator+=(long long);
    long long operator-=(long long) volatile;
    long long operator-=(long long);
    long long operator&=(long long) volatile;
    long long operator&=(long long);
    long long operator|=(long long) volatile;
    long long operator|=(long long);
    long long operator^=(long long) volatile;
    long long operator^=(long long);
} atomic_llong;

bool atomic_is_lock_free(const volatile atomic_llong*);
bool atomic_is_lock_free(const atomic_llong*);
void atomic_init(volatile atomic_llong*, itype);
void atomic_init(atomic_llong*, itype);
void atomic_store(volatile atomic_llong*, long long);
void atomic_store(atomic_llong*, long long);
void atomic_store_explicit(volatile atomic_llong*, long long, memory_order);
void atomic_store_explicit(atomic_llong*, long long, memory_order);
long long atomic_load(const volatile atomic_llong*);
long long atomic_load(const atomic_llong*);
long long atomic_load_explicit(const volatile atomic_llong*, memory_order);
long long atomic_load_explicit(const atomic_llong*, memory_order);
long long atomic_exchange(volatile atomic_llong*, long long);
long long atomic_exchange(atomic_llong*, long long);
long long atomic_exchange_explicit(volatile atomic_llong*, long long,
                                   memory_order);
long long atomic_exchange_explicit(atomic_llong*, long long, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_llong*, long long*,
                                  long long);
bool atomic_compare_exchange_weak(atomic_llong*, long long*, long long);
bool atomic_compare_exchange_strong(volatile atomic_llong*, long long*,
                                    long long);
bool atomic_compare_exchange_strong(atomic_llong*, long long*, long long);
bool atomic_compare_exchange_weak_explicit(volatile atomic_llong*, long long*,
                                           long long, memory_order,
                                           memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_llong*, long long*, long long,
                                           memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_llong*, long long*,
                                             long long, memory_order,
                                             memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_llong*, long long*,
                                             long long, memory_order,
                                             memory_order);
long long atomic_fetch_add(volatile atomic_llong*, long long);
long long atomic_fetch_add(atomic_llong*, long long);
long long atomic_fetch_add_explicit(volatile atomic_llong*, long long,
                                    memory_order);
long long atomic_fetch_add_explicit(atomic_llong*, long long, memory_order);
long long atomic_fetch_sub(volatile atomic_llong*, long long);
long long atomic_fetch_sub(atomic_llong*, long long);
long long atomic_fetch_sub_explicit(volatile atomic_llong*, long long,
                                    memory_order);
long long atomic_fetch_sub_explicit(atomic_llong*, long long, memory_order);
long long atomic_fetch_and(volatile atomic_llong*, long long);
long long atomic_fetch_and(atomic_llong*, long long);
long long atomic_fetch_and_explicit(volatile atomic_llong*, long long,
                                    memory_order);
long long atomic_fetch_and_explicit(atomic_llong*, long long, memory_order);
long long atomic_fetch_or(volatile atomic_llong*, long long);
long long atomic_fetch_or(atomic_llong*, long long);
long long atomic_fetch_or_explicit(volatile atomic_llong*, long long,
                                   memory_order);
long long atomic_fetch_or_explicit(atomic_llong*, long long, memory_order);
long long atomic_fetch_xor(volatile atomic_llong*, long long);
long long atomic_fetch_xor(atomic_llong*, long long);
long long atomic_fetch_xor_explicit(volatile atomic_llong*, long long,
                                    memory_order);
long long atomic_fetch_xor_explicit(atomic_llong*, long long, memory_order);

// atomic_ullong

typedef struct atomic_ullong
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(unsigned long long,
               memory_order = memory_order_seq_cst) volatile;
    void store(unsigned long long, memory_order = memory_order_seq_cst);
    unsigned long long load(memory_order = memory_order_seq_cst) const volatile;
    unsigned long long load(memory_order = memory_order_seq_cst) const;
    operator unsigned long long() const volatile;
    operator unsigned long long() const;
    unsigned long long exchange(unsigned long long,
    memory_order = memory_order_seq_cst) volatile;
    unsigned long long exchange(unsigned long long,
                                memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(unsigned long long&, unsigned long long,
                               memory_order, memory_order) volatile;
    bool compare_exchange_weak(unsigned long long&, unsigned long long,
                               memory_order, memory_order);
    bool compare_exchange_strong(unsigned long long&, unsigned long long,
                                 memory_order, memory_order) volatile;
    bool compare_exchange_strong(unsigned long long&, unsigned long long,
                                 memory_order, memory_order);
    bool compare_exchange_weak(unsigned long long&, unsigned long long,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(unsigned long long&, unsigned long long,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(unsigned long long&, unsigned long long,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(unsigned long long&, unsigned long long,
                                 memory_order = memory_order_seq_cst);
    unsigned long long fetch_add(unsigned long long,
                                 memory_order = memory_order_seq_cst) volatile;
    unsigned long long fetch_add(unsigned long long,
                                 memory_order = memory_order_seq_cst);
    unsigned long long fetch_sub(unsigned long long,
                                 memory_order = memory_order_seq_cst) volatile;
    unsigned long long fetch_sub(unsigned long long,
                                 memory_order = memory_order_seq_cst);
    unsigned long long fetch_and(unsigned long long,
                                 memory_order = memory_order_seq_cst) volatile;
    unsigned long long fetch_and(unsigned long long,
                                 memory_order = memory_order_seq_cst);
    unsigned long long fetch_or(unsigned long long,
                                memory_order = memory_order_seq_cst) volatile;
    unsigned long long fetch_or(unsigned long long,
                                memory_order = memory_order_seq_cst);
    unsigned long long fetch_xor(unsigned long long,
                                 memory_order = memory_order_seq_cst) volatile;
    unsigned long long fetch_xor(unsigned long long,
                                 memory_order = memory_order_seq_cst);
    atomic_ullong() = default;
    constexpr atomic_ullong(unsigned long long);
    atomic_ullong(const atomic_ullong&) = delete;
    atomic_ullong& operator=(const atomic_ullong&) = delete;
    atomic_ullong& operator=(const atomic_ullong&) volatile = delete;
    unsigned long long operator=(unsigned long long) volatile;
    unsigned long long operator=(unsigned long long);
    unsigned long long operator++(int) volatile;
    unsigned long long operator++(int);
    unsigned long long operator--(int) volatile;
    unsigned long long operator--(int);
    unsigned long long operator++() volatile;
    unsigned long long operator++();
    unsigned long long operator--() volatile;
    unsigned long long operator--();
    unsigned long long operator+=(unsigned long long) volatile;
    unsigned long long operator+=(unsigned long long);
    unsigned long long operator-=(unsigned long long) volatile;
    unsigned long long operator-=(unsigned long long);
    unsigned long long operator&=(unsigned long long) volatile;
    unsigned long long operator&=(unsigned long long);
    unsigned long long operator|=(unsigned long long) volatile;
    unsigned long long operator|=(unsigned long long);
    unsigned long long operator^=(unsigned long long) volatile;
    unsigned long long operator^=(unsigned long long);
} atomic_ullong;

bool atomic_is_lock_free(const volatile atomic_ullong*);
bool atomic_is_lock_free(const atomic_ullong*);
void atomic_init(volatile atomic_ullong*, itype);
void atomic_init(atomic_ullong*, itype);
void atomic_store(volatile atomic_ullong*, unsigned long long);
void atomic_store(atomic_ullong*, unsigned long long);
void atomic_store_explicit(volatile atomic_ullong*, unsigned long long,
                           memory_order);
void atomic_store_explicit(atomic_ullong*, unsigned long long, memory_order);
unsigned long long atomic_load(const volatile atomic_ullong*);
unsigned long long atomic_load(const atomic_ullong*);
unsigned long long atomic_load_explicit(const volatile atomic_ullong*,
                                        memory_order);
unsigned long long atomic_load_explicit(const atomic_ullong*, memory_order);
unsigned long long atomic_exchange(volatile atomic_ullong*, unsigned long long);
unsigned long long atomic_exchange(atomic_ullong*, unsigned long long);
unsigned long long atomic_exchange_explicit(volatile atomic_ullong*,
                                            unsigned long long, memory_order);
unsigned long long atomic_exchange_explicit(atomic_ullong*, unsigned long long,
                                            memory_order);
bool atomic_compare_exchange_weak(volatile atomic_ullong*, unsigned long long*,
                                  unsigned long long);
bool atomic_compare_exchange_weak(atomic_ullong*, unsigned long long*,
                                  unsigned long long);
bool atomic_compare_exchange_strong(volatile atomic_ullong*,
                                    unsigned long long*, unsigned long long);
bool atomic_compare_exchange_strong(atomic_ullong*, unsigned long long*,
                                    unsigned long long);
bool atomic_compare_exchange_weak_explicit(volatile atomic_ullong*,
                                           unsigned long long*,
                                           unsigned long long, memory_order,
                                           memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_ullong*, unsigned long long*,
                                           unsigned long long, memory_order,
                                           memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_ullong*,
                                             unsigned long long*,
                                             unsigned long long, memory_order,
                                             memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_ullong*,
                                             unsigned long long*,
                                             unsigned long long, memory_order,
                                             memory_order);
unsigned long long atomic_fetch_add(volatile atomic_ullong*,
                                    unsigned long long);
unsigned long long atomic_fetch_add(atomic_ullong*, unsigned long long);
unsigned long long atomic_fetch_add_explicit(volatile atomic_ullong*,
                                             unsigned long long, memory_order);
unsigned long long atomic_fetch_add_explicit(atomic_ullong*, unsigned long long,
                                             memory_order);
unsigned long long atomic_fetch_sub(volatile atomic_ullong*,
                                    unsigned long long);
unsigned long long atomic_fetch_sub(atomic_ullong*, unsigned long long);
unsigned long long atomic_fetch_sub_explicit(volatile atomic_ullong*,
                                             unsigned long long, memory_order);
unsigned long long atomic_fetch_sub_explicit(atomic_ullong*, unsigned long long,
                                             memory_order);
unsigned long long atomic_fetch_and(volatile atomic_ullong*,
                                    unsigned long long);
unsigned long long atomic_fetch_and(atomic_ullong*, unsigned long long);
unsigned long long atomic_fetch_and_explicit(volatile atomic_ullong*,
                                             unsigned long long, memory_order);
unsigned long long atomic_fetch_and_explicit(atomic_ullong*, unsigned long long,
                                             memory_order);
unsigned long long atomic_fetch_or(volatile atomic_ullong*, unsigned long long);
unsigned long long atomic_fetch_or(atomic_ullong*, unsigned long long);
unsigned long long atomic_fetch_or_explicit(volatile atomic_ullong*,
                                            unsigned long long, memory_order);
unsigned long long atomic_fetch_or_explicit(atomic_ullong*, unsigned long long,
                                            memory_order);
unsigned long long atomic_fetch_xor(volatile atomic_ullong*,
                                    unsigned long long);
unsigned long long atomic_fetch_xor(atomic_ullong*, unsigned long long);
unsigned long long atomic_fetch_xor_explicit(volatile atomic_ullong*,
                                             unsigned long long, memory_order);
unsigned long long atomic_fetch_xor_explicit(atomic_ullong*, unsigned long long,
                                             memory_order);

// atomic_char16_t

typedef struct atomic_char16_t
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(char16_t, memory_order = memory_order_seq_cst) volatile;
    void store(char16_t, memory_order = memory_order_seq_cst);
    char16_t load(memory_order = memory_order_seq_cst) const volatile;
    char16_t load(memory_order = memory_order_seq_cst) const;
    operator char16_t() const volatile;
    operator char16_t() const;
    char16_t exchange(char16_t,
    memory_order = memory_order_seq_cst) volatile;
    char16_t exchange(char16_t, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(char16_t&, char16_t, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(char16_t&, char16_t, memory_order, memory_order);
    bool compare_exchange_strong(char16_t&, char16_t, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(char16_t&, char16_t,
                                 memory_order, memory_order);
    bool compare_exchange_weak(char16_t&, char16_t,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(char16_t&, char16_t,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(char16_t&, char16_t,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(char16_t&, char16_t,
                                 memory_order = memory_order_seq_cst);
    char16_t fetch_add(char16_t, memory_order = memory_order_seq_cst) volatile;
    char16_t fetch_add(char16_t, memory_order = memory_order_seq_cst);
    char16_t fetch_sub(char16_t, memory_order = memory_order_seq_cst) volatile;
    char16_t fetch_sub(char16_t, memory_order = memory_order_seq_cst);
    char16_t fetch_and(char16_t, memory_order = memory_order_seq_cst) volatile;
    char16_t fetch_and(char16_t, memory_order = memory_order_seq_cst);
    char16_t fetch_or(char16_t, memory_order = memory_order_seq_cst) volatile;
    char16_t fetch_or(char16_t, memory_order = memory_order_seq_cst);
    char16_t fetch_xor(char16_t, memory_order = memory_order_seq_cst) volatile;
    char16_t fetch_xor(char16_t, memory_order = memory_order_seq_cst);
    atomic_char16_t() = default;
    constexpr atomic_char16_t(char16_t);
    atomic_char16_t(const atomic_char16_t&) = delete;
    atomic_char16_t& operator=(const atomic_char16_t&) = delete;
    atomic_char16_t& operator=(const atomic_char16_t&) volatile = delete;
    char16_t operator=(char16_t) volatile;
    char16_t operator=(char16_t);
    char16_t operator++(int) volatile;
    char16_t operator++(int);
    char16_t operator--(int) volatile;
    char16_t operator--(int);
    char16_t operator++() volatile;
    char16_t operator++();
    char16_t operator--() volatile;
    char16_t operator--();
    char16_t operator+=(char16_t) volatile;
    char16_t operator+=(char16_t);
    char16_t operator-=(char16_t) volatile;
    char16_t operator-=(char16_t);
    char16_t operator&=(char16_t) volatile;
    char16_t operator&=(char16_t);
    char16_t operator|=(char16_t) volatile;
    char16_t operator|=(char16_t);
    char16_t operator^=(char16_t) volatile;
    char16_t operator^=(char16_t);
} atomic_char16_t;

bool atomic_is_lock_free(const volatile atomic_char16_t*);
bool atomic_is_lock_free(const atomic_char16_t*);
void atomic_init(volatile atomic_char16_t*, itype);
void atomic_init(atomic_char16_t*, itype);
void atomic_store(volatile atomic_char16_t*, char16_t);
void atomic_store(atomic_char16_t*, char16_t);
void atomic_store_explicit(volatile atomic_char16_t*, char16_t, memory_order);
void atomic_store_explicit(atomic_char16_t*, char16_t, memory_order);
char16_t atomic_load(const volatile atomic_char16_t*);
char16_t atomic_load(const atomic_char16_t*);
char16_t atomic_load_explicit(const volatile atomic_char16_t*, memory_order);
char16_t atomic_load_explicit(const atomic_char16_t*, memory_order);
char16_t atomic_exchange(volatile atomic_char16_t*, char16_t);
char16_t atomic_exchange(atomic_char16_t*, char16_t);
char16_t atomic_exchange_explicit(volatile atomic_char16_t*, char16_t,
                                  memory_order);
char16_t atomic_exchange_explicit(atomic_char16_t*, char16_t, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_char16_t*, char16_t*,
                                  char16_t);
bool atomic_compare_exchange_weak(atomic_char16_t*, char16_t*, char16_t);
bool atomic_compare_exchange_strong(volatile atomic_char16_t*, char16_t*,
                                    char16_t);
bool atomic_compare_exchange_strong(atomic_char16_t*, char16_t*, char16_t);
bool atomic_compare_exchange_weak_explicit(volatile atomic_char16_t*, char16_t*,
                                           char16_t, memory_order,
                                           memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_char16_t*, char16_t*,
                                           char16_t, memory_order,
                                           memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_char16_t*,
                                             char16_t*, char16_t, memory_order,
                                             memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_char16_t*, char16_t*,
                                             char16_t, memory_order,
                                             memory_order);
char16_t atomic_fetch_add(volatile atomic_char16_t*, char16_t);
char16_t atomic_fetch_add(atomic_char16_t*, char16_t);
char16_t atomic_fetch_add_explicit(volatile atomic_char16_t*, char16_t,
                                   memory_order);
char16_t atomic_fetch_add_explicit(atomic_char16_t*, char16_t, memory_order);
char16_t atomic_fetch_sub(volatile atomic_char16_t*, char16_t);
char16_t atomic_fetch_sub(atomic_char16_t*, char16_t);
char16_t atomic_fetch_sub_explicit(volatile atomic_char16_t*, char16_t,
                                   memory_order);
char16_t atomic_fetch_sub_explicit(atomic_char16_t*, char16_t, memory_order);
char16_t atomic_fetch_and(volatile atomic_char16_t*, char16_t);
char16_t atomic_fetch_and(atomic_char16_t*, char16_t);
char16_t atomic_fetch_and_explicit(volatile atomic_char16_t*, char16_t,
                                   memory_order);
char16_t atomic_fetch_and_explicit(atomic_char16_t*, char16_t, memory_order);
char16_t atomic_fetch_or(volatile atomic_char16_t*, char16_t);
char16_t atomic_fetch_or(atomic_char16_t*, char16_t);
char16_t atomic_fetch_or_explicit(volatile atomic_char16_t*, char16_t,
                                  memory_order);
char16_t atomic_fetch_or_explicit(atomic_char16_t*, char16_t, memory_order);
char16_t atomic_fetch_xor(volatile atomic_char16_t*, char16_t);
char16_t atomic_fetch_xor(atomic_char16_t*, char16_t);
char16_t atomic_fetch_xor_explicit(volatile atomic_char16_t*, char16_t,
                                   memory_order);
char16_t atomic_fetch_xor_explicit(atomic_char16_t*, char16_t, memory_order);

// atomic_char32_t

typedef struct atomic_char32_t
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(char32_t, memory_order = memory_order_seq_cst) volatile;
    void store(char32_t, memory_order = memory_order_seq_cst);
    char32_t load(memory_order = memory_order_seq_cst) const volatile;
    char32_t load(memory_order = memory_order_seq_cst) const;
    operator char32_t() const volatile;
    operator char32_t() const;
    char32_t exchange(char32_t,
    memory_order = memory_order_seq_cst) volatile;
    char32_t exchange(char32_t, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(char32_t&, char32_t, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(char32_t&, char32_t, memory_order, memory_order);
    bool compare_exchange_strong(char32_t&, char32_t, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(char32_t&, char32_t,
                                 memory_order, memory_order);
    bool compare_exchange_weak(char32_t&, char32_t,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(char32_t&, char32_t,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(char32_t&, char32_t,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(char32_t&, char32_t,
                                 memory_order = memory_order_seq_cst);
    char32_t fetch_add(char32_t, memory_order = memory_order_seq_cst) volatile;
    char32_t fetch_add(char32_t, memory_order = memory_order_seq_cst);
    char32_t fetch_sub(char32_t, memory_order = memory_order_seq_cst) volatile;
    char32_t fetch_sub(char32_t, memory_order = memory_order_seq_cst);
    char32_t fetch_and(char32_t, memory_order = memory_order_seq_cst) volatile;
    char32_t fetch_and(char32_t, memory_order = memory_order_seq_cst);
    char32_t fetch_or(char32_t, memory_order = memory_order_seq_cst) volatile;
    char32_t fetch_or(char32_t, memory_order = memory_order_seq_cst);
    char32_t fetch_xor(char32_t, memory_order = memory_order_seq_cst) volatile;
    char32_t fetch_xor(char32_t, memory_order = memory_order_seq_cst);
    atomic_char32_t() = default;
    constexpr atomic_char32_t(char32_t);
    atomic_char32_t(const atomic_char32_t&) = delete;
    atomic_char32_t& operator=(const atomic_char32_t&) = delete;
    atomic_char32_t& operator=(const atomic_char32_t&) volatile = delete;
    char32_t operator=(char32_t) volatile;
    char32_t operator=(char32_t);
    char32_t operator++(int) volatile;
    char32_t operator++(int);
    char32_t operator--(int) volatile;
    char32_t operator--(int);
    char32_t operator++() volatile;
    char32_t operator++();
    char32_t operator--() volatile;
    char32_t operator--();
    char32_t operator+=(char32_t) volatile;
    char32_t operator+=(char32_t);
    char32_t operator-=(char32_t) volatile;
    char32_t operator-=(char32_t);
    char32_t operator&=(char32_t) volatile;
    char32_t operator&=(char32_t);
    char32_t operator|=(char32_t) volatile;
    char32_t operator|=(char32_t);
    char32_t operator^=(char32_t) volatile;
    char32_t operator^=(char32_t);
} atomic_char32_t;

bool atomic_is_lock_free(const volatile atomic_char32_t*);
bool atomic_is_lock_free(const atomic_char32_t*);
void atomic_init(volatile atomic_char32_t*, itype);
void atomic_init(atomic_char32_t*, itype);
void atomic_store(volatile atomic_char32_t*, char32_t);
void atomic_store(atomic_char32_t*, char32_t);
void atomic_store_explicit(volatile atomic_char32_t*, char32_t, memory_order);
void atomic_store_explicit(atomic_char32_t*, char32_t, memory_order);
char32_t atomic_load(const volatile atomic_char32_t*);
char32_t atomic_load(const atomic_char32_t*);
char32_t atomic_load_explicit(const volatile atomic_char32_t*, memory_order);
char32_t atomic_load_explicit(const atomic_char32_t*, memory_order);
char32_t atomic_exchange(volatile atomic_char32_t*, char32_t);
char32_t atomic_exchange(atomic_char32_t*, char32_t);
char32_t atomic_exchange_explicit(volatile atomic_char32_t*, char32_t,
                                  memory_order);
char32_t atomic_exchange_explicit(atomic_char32_t*, char32_t, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_char32_t*, char32_t*,
                                  char32_t);
bool atomic_compare_exchange_weak(atomic_char32_t*, char32_t*, char32_t);
bool atomic_compare_exchange_strong(volatile atomic_char32_t*, char32_t*,
                                    char32_t);
bool atomic_compare_exchange_strong(atomic_char32_t*, char32_t*, char32_t);
bool atomic_compare_exchange_weak_explicit(volatile atomic_char32_t*, char32_t*,
                                           char32_t, memory_order,
                                           memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_char32_t*, char32_t*,
                                           char32_t, memory_order,
                                           memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_char32_t*,
                                             char32_t*, char32_t, memory_order,
                                             memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_char32_t*, char32_t*,
                                             char32_t, memory_order,
                                             memory_order);
char32_t atomic_fetch_add(volatile atomic_char32_t*, char32_t);
char32_t atomic_fetch_add(atomic_char32_t*, char32_t);
char32_t atomic_fetch_add_explicit(volatile atomic_char32_t*, char32_t,
                                   memory_order);
char32_t atomic_fetch_add_explicit(atomic_char32_t*, char32_t, memory_order);
char32_t atomic_fetch_sub(volatile atomic_char32_t*, char32_t);
char32_t atomic_fetch_sub(atomic_char32_t*, char32_t);
char32_t atomic_fetch_sub_explicit(volatile atomic_char32_t*, char32_t,
                                   memory_order);
char32_t atomic_fetch_sub_explicit(atomic_char32_t*, char32_t, memory_order);
char32_t atomic_fetch_and(volatile atomic_char32_t*, char32_t);
char32_t atomic_fetch_and(atomic_char32_t*, char32_t);
char32_t atomic_fetch_and_explicit(volatile atomic_char32_t*, char32_t,
                                   memory_order);
char32_t atomic_fetch_and_explicit(atomic_char32_t*, char32_t, memory_order);
char32_t atomic_fetch_or(volatile atomic_char32_t*, char32_t);
char32_t atomic_fetch_or(atomic_char32_t*, char32_t);
char32_t atomic_fetch_or_explicit(volatile atomic_char32_t*, char32_t,
                                  memory_order);
char32_t atomic_fetch_or_explicit(atomic_char32_t*, char32_t, memory_order);
char32_t atomic_fetch_xor(volatile atomic_char32_t*, char32_t);
char32_t atomic_fetch_xor(atomic_char32_t*, char32_t);
char32_t atomic_fetch_xor_explicit(volatile atomic_char32_t*, char32_t,
                                   memory_order);
char32_t atomic_fetch_xor_explicit(atomic_char32_t*, char32_t, memory_order);

// atomic_wchar_t

typedef struct atomic_wchar_t
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(wchar_t, memory_order = memory_order_seq_cst) volatile;
    void store(wchar_t, memory_order = memory_order_seq_cst);
    wchar_t load(memory_order = memory_order_seq_cst) const volatile;
    wchar_t load(memory_order = memory_order_seq_cst) const;
    operator wchar_t() const volatile;
    operator wchar_t() const;
    wchar_t exchange(wchar_t,
    memory_order = memory_order_seq_cst) volatile;
    wchar_t exchange(wchar_t, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(wchar_t&, wchar_t, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(wchar_t&, wchar_t, memory_order, memory_order);
    bool compare_exchange_strong(wchar_t&, wchar_t, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(wchar_t&, wchar_t, memory_order, memory_order);
    bool compare_exchange_weak(wchar_t&, wchar_t,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(wchar_t&, wchar_t,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(wchar_t&, wchar_t,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(wchar_t&, wchar_t,
                                 memory_order = memory_order_seq_cst);
    wchar_t fetch_add(wchar_t, memory_order = memory_order_seq_cst) volatile;
    wchar_t fetch_add(wchar_t, memory_order = memory_order_seq_cst);
    wchar_t fetch_sub(wchar_t, memory_order = memory_order_seq_cst) volatile;
    wchar_t fetch_sub(wchar_t, memory_order = memory_order_seq_cst);
    wchar_t fetch_and(wchar_t, memory_order = memory_order_seq_cst) volatile;
    wchar_t fetch_and(wchar_t, memory_order = memory_order_seq_cst);
    wchar_t fetch_or(wchar_t, memory_order = memory_order_seq_cst) volatile;
    wchar_t fetch_or(wchar_t, memory_order = memory_order_seq_cst);
    wchar_t fetch_xor(wchar_t, memory_order = memory_order_seq_cst) volatile;
    wchar_t fetch_xor(wchar_t, memory_order = memory_order_seq_cst);
    atomic_wchar_t() = default;
    constexpr atomic_wchar_t(wchar_t);
    atomic_wchar_t(const atomic_wchar_t&) = delete;
    atomic_wchar_t& operator=(const atomic_wchar_t&) = delete;
    atomic_wchar_t& operator=(const atomic_wchar_t&) volatile = delete;
    wchar_t operator=(wchar_t) volatile;
    wchar_t operator=(wchar_t);
    wchar_t operator++(int) volatile;
    wchar_t operator++(int);
    wchar_t operator--(int) volatile;
    wchar_t operator--(int);
    wchar_t operator++() volatile;
    wchar_t operator++();
    wchar_t operator--() volatile;
    wchar_t operator--();
    wchar_t operator+=(wchar_t) volatile;
    wchar_t operator+=(wchar_t);
    wchar_t operator-=(wchar_t) volatile;
    wchar_t operator-=(wchar_t);
    wchar_t operator&=(wchar_t) volatile;
    wchar_t operator&=(wchar_t);
    wchar_t operator|=(wchar_t) volatile;
    wchar_t operator|=(wchar_t);
    wchar_t operator^=(wchar_t) volatile;
    wchar_t operator^=(wchar_t);
} atomic_wchar_t;

bool atomic_is_lock_free(const volatile atomic_wchar_t*);
bool atomic_is_lock_free(const atomic_wchar_t*);
void atomic_init(volatile atomic_wchar_t*, itype);
void atomic_init(atomic_wchar_t*, itype);
void atomic_store(volatile atomic_wchar_t*, wchar_t);
void atomic_store(atomic_wchar_t*, wchar_t);
void atomic_store_explicit(volatile atomic_wchar_t*, wchar_t, memory_order);
void atomic_store_explicit(atomic_wchar_t*, wchar_t, memory_order);
wchar_t atomic_load(const volatile atomic_wchar_t*);
wchar_t atomic_load(const atomic_wchar_t*);
wchar_t atomic_load_explicit(const volatile atomic_wchar_t*, memory_order);
wchar_t atomic_load_explicit(const atomic_wchar_t*, memory_order);
wchar_t atomic_exchange(volatile atomic_wchar_t*, wchar_t);
wchar_t atomic_exchange(atomic_wchar_t*, wchar_t);
wchar_t atomic_exchange_explicit(volatile atomic_wchar_t*,
                                 wchar_t, memory_order);
wchar_t atomic_exchange_explicit(atomic_wchar_t*, wchar_t, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_wchar_t*, wchar_t*, wchar_t);
bool atomic_compare_exchange_weak(atomic_wchar_t*, wchar_t*, wchar_t);
bool atomic_compare_exchange_strong(volatile atomic_wchar_t*, wchar_t*,
                                    wchar_t);
bool atomic_compare_exchange_strong(atomic_wchar_t*, wchar_t*, wchar_t);
bool atomic_compare_exchange_weak_explicit(volatile atomic_wchar_t*, wchar_t*,
                                           wchar_t, memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_wchar_t*, wchar_t*, wchar_t,
                                           memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_wchar_t*, wchar_t*,
                                             wchar_t, memory_order,
                                             memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_wchar_t*, wchar_t*, wchar_t,
                                             memory_order, memory_order);
wchar_t atomic_fetch_add(volatile atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_add(atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_add_explicit(volatile atomic_wchar_t*, wchar_t,
                                  memory_order);
wchar_t atomic_fetch_add_explicit(atomic_wchar_t*, wchar_t, memory_order);
wchar_t atomic_fetch_sub(volatile atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_sub(atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_sub_explicit(volatile atomic_wchar_t*, wchar_t,
                                  memory_order);
wchar_t atomic_fetch_sub_explicit(atomic_wchar_t*, wchar_t, memory_order);
wchar_t atomic_fetch_and(volatile atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_and(atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_and_explicit(volatile atomic_wchar_t*, wchar_t,
                                  memory_order);
wchar_t atomic_fetch_and_explicit(atomic_wchar_t*, wchar_t, memory_order);
wchar_t atomic_fetch_or(volatile atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_or(atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_or_explicit(volatile atomic_wchar_t*, wchar_t,
                                 memory_order);
wchar_t atomic_fetch_or_explicit(atomic_wchar_t*, wchar_t, memory_order);
wchar_t atomic_fetch_xor(volatile atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_xor(atomic_wchar_t*, wchar_t);
wchar_t atomic_fetch_xor_explicit(volatile atomic_wchar_t*, wchar_t,
                                  memory_order);
wchar_t atomic_fetch_xor_explicit(atomic_wchar_t*, wchar_t, memory_order);

// Atomics for standard typedef types

typedef atomic_schar  atomic_int_least8_t;
typedef atomic_uchar  atomic_uint_least8_t;
typedef atomic_short  atomic_int_least16_t;
typedef atomic_ushort atomic_uint_least16_t;
typedef atomic_int    atomic_int_least32_t;
typedef atomic_uint   atomic_uint_least32_t;
typedef atomic_llong  atomic_int_least64_t;
typedef atomic_ullong atomic_uint_least64_t;

typedef atomic_schar  atomic_int_fast8_t;
typedef atomic_uchar  atomic_uint_fast8_t;
typedef atomic_short  atomic_int_fast16_t;
typedef atomic_ushort atomic_uint_fast16_t;
typedef atomic_int    atomic_int_fast32_t;
typedef atomic_uint   atomic_uint_fast32_t;
typedef atomic_llong  atomic_int_fast64_t;
typedef atomic_ullong atomic_uint_fast64_t;

typedef atomic_long   atomic_intptr_t;
typedef atomic_ulong  atomic_uintptr_t;
typedef atomic_ulong  atomic_size_t;
typedef atomic_long   atomic_ptrdiff_t;
typedef atomic_llong  atomic_intmax_t;
typedef atomic_ullong atomic_uintmax_t;

// address types

typedef struct atomic_address
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(void*, memory_order = memory_order_seq_cst) volatile;
    void store(void*, memory_order = memory_order_seq_cst);
    void* load(memory_order = memory_order_seq_cst) const volatile;
    void* load(memory_order = memory_order_seq_cst) const;
    operator void*() const volatile;
    operator void*() const;
    void* exchange(void*, memory_order = memory_order_seq_cst) volatile;
    void* exchange(void*, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(void*&, void*, memory_order,
                               memory_order) volatile;
    bool compare_exchange_weak(void*&, void*, memory_order, memory_order);
    bool compare_exchange_strong(void*&, void*, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(void*&, void*, memory_order, memory_order);
    bool compare_exchange_weak(void*&, void*,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(void*&, void*,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(void*&, void*,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(void*&, void*,
                                 memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(const void*&, const void*,
                               memory_order, memory_order) volatile;
    bool compare_exchange_weak(const void*&, const void*, memory_order,
                               memory_order);
    bool compare_exchange_strong(const void*&, const void*, memory_order,
                                 memory_order) volatile;
    bool compare_exchange_strong(const void*&, const void*, memory_order,
                                 memory_order);
    bool compare_exchange_weak(const void*&, const void*,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(const void*&, const void*,
                               memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(const void*&, const void*,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(const void*&, const void*,
                                 memory_order = memory_order_seq_cst);
    void* fetch_add(ptrdiff_t, memory_order = memory_order_seq_cst) volatile;
    void* fetch_add(ptrdiff_t, memory_order = memory_order_seq_cst);
    void* fetch_sub(ptrdiff_t, memory_order = memory_order_seq_cst) volatile;
    void* fetch_sub(ptrdiff_t, memory_order = memory_order_seq_cst);
    atomic_address() = default;
    constexpr atomic_address(void*);
    atomic_address(const atomic_address&) = delete;
    atomic_address& operator=(const atomic_address&) = delete;
    atomic_address& operator=(const atomic_address&) volatile = delete;
    void* operator=(const void*) volatile;
    void* operator=(const void*);
    void* operator+=(ptrdiff_t) volatile;
    void* operator+=(ptrdiff_t);
    void* operator-=(ptrdiff_t) volatile;
    void* operator-=(ptrdiff_t);
} atomic_address;

bool atomic_is_lock_free(const volatile atomic_address*);
bool atomic_is_lock_free(const atomic_address*);
void atomic_init(volatile atomic_address*, void*);
void atomic_init(atomic_address*, void*);
void atomic_store(volatile atomic_address*, void*);
void atomic_store(atomic_address*, void*);
void atomic_store_explicit(volatile atomic_address*, void*, memory_order);
void atomic_store_explicit(atomic_address*, void*, memory_order);
void* atomic_load(const volatile atomic_address*);
void* atomic_load(const atomic_address*);
void* atomic_load_explicit(const volatile atomic_address*, memory_order);
void* atomic_load_explicit(const atomic_address*, memory_order);
void* atomic_exchange(volatile atomic_address*, void*);
void* atomic_exchange(atomic_address*, void*);
void* atomic_exchange_explicit(volatile atomic_address*, void*, memory_order);
void* atomic_exchange_explicit(atomic_address*, void*, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_address*, void**, void*);
bool atomic_compare_exchange_weak(atomic_address*, void**, void*);
bool atomic_compare_exchange_strong(volatile atomic_address*, void**, void*);
bool atomic_compare_exchange_strong(atomic_address*, void**, void*);
bool atomic_compare_exchange_weak_explicit(volatile atomic_address*, void**,
                                           void*, memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_address*, void**, void*,
                                           memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_address*, void**,
                                             void*, memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_address*, void**, void*,
                                             memory_order, memory_order);
void* atomic_fetch_add(volatile atomic_address*, ptrdiff_t);
void* atomic_fetch_add(atomic_address*, ptrdiff_t);
void* atomic_fetch_add_explicit(volatile atomic_address*, ptrdiff_t,
                                memory_order);
void* atomic_fetch_add_explicit(atomic_address*, ptrdiff_t, memory_order);
void* atomic_fetch_sub(volatile atomic_address*, ptrdiff_t);
void* atomic_fetch_sub(atomic_address*, ptrdiff_t);
void* atomic_fetch_sub_explicit(volatile atomic_address*, ptrdiff_t,
                                memory_order);
void* atomic_fetch_sub_explicit(atomic_address*, ptrdiff_t, memory_order);

// generic types

template <class T>
struct atomic
{
    bool is_lock_free() const volatile;
    bool is_lock_free() const;
    void store(T, memory_order = memory_order_seq_cst) volatile;
    void store(T, memory_order = memory_order_seq_cst);
    T load(memory_order = memory_order_seq_cst) const volatile;
    T load(memory_order = memory_order_seq_cst) const;
    operator T() const volatile;
    operator T() const;
    T exchange(T, memory_order = memory_order_seq_cst) volatile;
    T exchange(T, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(T&, T, memory_order, memory_order) volatile;
    bool compare_exchange_weak(T&, T, memory_order, memory_order);
    bool compare_exchange_strong(T&, T, memory_order, memory_order) volatile;
    bool compare_exchange_strong(T&, T, memory_order, memory_order);
    bool compare_exchange_weak(T&, T,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(T&, T, memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(T&, T,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(T&, T, memory_order = memory_order_seq_cst);

    atomic() = default;
    constexpr atomic(T);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    T operator=(T) volatile;
    T operator=(T);
};

template <>
struct atomic<bool>
    : public atomic_bool
{
    atomic() = default;
    constexpr atomic(bool);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    bool operator=(bool) volatile;
    bool operator=(bool);
    operator bool() const volatile;
    operator bool() const;
};

template <>
struct atomic<char>
    : public atomic_char
{
    atomic() = default;
    constexpr atomic(char);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    char operator=(char) volatile;
    char operator=(char);
    operator char() const volatile;
    operator char() const;
};

template <>
struct atomic<signed char>
    : public atomic_schar
{
    atomic() = default;
    constexpr atomic(signed char);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    signed char operator=(signed char) volatile;
    signed char operator=(signed char);
    operator signed char() const volatile;
    operator signed char() const;
};

template <>
struct atomic<unsigned char>
    : public atomic_uchar
{
    atomic() = default;
    constexpr atomic(unsigned char);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    unsigned char operator=(unsigned char) volatile;
    unsigned char operator=(unsigned char);
    operator unsigned char() const volatile;
    operator unsigned char() const;
};

template <>
struct atomic<short>
    : public atomic_short
{
    atomic() = default;
    constexpr atomic(short);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    short operator=(short) volatile;
    short operator=(short);
    operator short() const volatile;
    operator short() const;
};

template <>
struct atomic<unsigned short>
    : public atomic_ushort
{
    atomic() = default;
    constexpr atomic(unsigned short);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    unsigned short operator=(unsigned short) volatile;
    unsigned short operator=(unsigned short);
    operator unsigned short() const volatile;
    operator unsigned short() const;
};

template <>
struct atomic<int>
    : public atomic_int
{
    atomic() = default;
    constexpr atomic(int);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    int operator=(int) volatile;
    int operator=(int);
    operator int() const volatile;
    operator int() const;
};

template <>
struct atomic<unsigned int>
    : public atomic_uint
{
    atomic() = default;
    constexpr atomic(unsigned int);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    unsigned int operator=(unsigned int) volatile;
    unsigned int operator=(unsigned int);
    operator unsigned int() const volatile;
    operator unsigned int() const;
};

template <>
struct atomic<long>
    : public atomic_long
{
    atomic() = default;
    constexpr atomic(long);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    long operator=(long) volatile;
    long operator=(long);
    operator long() const volatile;
    operator long() const;
};

template <>
struct atomic<unsigned long>
    : public atomic_ulong
{
    atomic() = default;
    constexpr atomic(unsigned long);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    unsigned long operator=(unsigned long) volatile;
    unsigned long operator=(unsigned long);
    operator unsigned long() const volatile;
    operator unsigned long() const;
};

template <>
struct atomic<long long>
    : public atomic_llong
{
    atomic() = default;
    constexpr atomic(long long);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    long long operator=(long long) volatile;
    long long operator=(long long);
    operator long long() const volatile;
    operator long long() const;
};

template <>
struct atomic<unsigned long long>
    : public atomic_ullong
{
    atomic() = default;
    constexpr atomic(unsigned long long);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    unsigned long long operator=(unsigned long long) volatile;
    unsigned long long operator=(unsigned long long);
    operator unsigned long long() const volatile;
    operator unsigned long long() const;
};

template <>
struct atomic<char16_t>
    : public atomic_char16_t
{
    atomic() = default;
    constexpr atomic(char16_t);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    char16_t operator=(char16_t) volatile;
    char16_t operator=(char16_t);
    operator char16_t() const volatile;
    operator char16_t() const;
};

template <>
struct atomic<char32_t>
    : public atomic_char32_t
{
    atomic() = default;
    constexpr atomic(char32_t);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    char32_t operator=(char32_t) volatile;
    char32_t operator=(char32_t);
    operator char32_t() const volatile;
    operator char32_t() const;
};

template <>
struct atomic<wchar_t>
    : public atomic_wchar_t
{
    atomic() = default;
    constexpr atomic(wchar_t);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    wchar_t operator=(wchar_t) volatile;
    wchar_t operator=(wchar_t);
    operator wchar_t() const volatile;
    operator wchar_t() const;
};

template <class T>
struct atomic<T*>
    : public atomic_address
{
    void store(T*, memory_order = memory_order_seq_cst) volatile;
    void store(T*, memory_order = memory_order_seq_cst);
    T* load(memory_order = memory_order_seq_cst) const volatile;
    T* load(memory_order = memory_order_seq_cst) const;
    operator T*() const volatile;
    operator T*() const;
    T* exchange(T*, memory_order = memory_order_seq_cst) volatile;
    T* exchange(T*, memory_order = memory_order_seq_cst);
    bool compare_exchange_weak(T*&, T*, memory_order, memory_order) volatile;
    bool compare_exchange_weak(T*&, T*, memory_order, memory_order);
    bool compare_exchange_strong(T*&, T*, memory_order, memory_order) volatile;
    bool compare_exchange_strong(T*&, T*, memory_order, memory_order);
    bool compare_exchange_weak(T*&, T*,
                               memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_weak(T*&, T*, memory_order = memory_order_seq_cst);
    bool compare_exchange_strong(T*&, T*,
                                 memory_order = memory_order_seq_cst) volatile;
    bool compare_exchange_strong(T*&, T*, memory_order = memory_order_seq_cst);
    T* fetch_add(ptrdiff_t, memory_order = memory_order_seq_cst) volatile;
    T* fetch_add(ptrdiff_t, memory_order = memory_order_seq_cst);
    T* fetch_sub(ptrdiff_t, memory_order = memory_order_seq_cst) volatile;
    T* fetch_sub(ptrdiff_t, memory_order = memory_order_seq_cst);
    atomic() = default;
    constexpr atomic(T*);
    atomic(const atomic&) = delete;
    atomic& operator=(const atomic&) = delete;
    atomic& operator=(const atomic&) volatile = delete;
    T* operator=(T*) volatile;
    T* operator=(T*);
    T* operator++(int) volatile;
    T* operator++(int);
    T* operator--(int) volatile;
    T* operator--(int);
    T* operator++() volatile;
    T* operator++();
    T* operator--() volatile;
    T* operator--();
    T* operator+=(ptrdiff_t) volatile;
    T* operator+=(ptrdiff_t);
    T* operator-=(ptrdiff_t) volatile;
    T* operator-=(ptrdiff_t);
};

// fences

void atomic_thread_fence(memory_order);
void atomic_signal_fence(memory_order);

}  // std

*/

#include <__config>
#include <__mutex_base>
#include <cstring>

#pragma GCC system_header

_LIBCPP_BEGIN_NAMESPACE_STD

typedef enum memory_order
{
    memory_order_relaxed, memory_order_consume, memory_order_acquire,
    memory_order_release, memory_order_acq_rel, memory_order_seq_cst
} memory_order;

template <class _Tp>
inline _LIBCPP_INLINE_VISIBILITY
_Tp
kill_dependency(_Tp __y)
{
    return __y;
}

_LIBCPP_VISIBLE
mutex& __not_atomic_mut();

// load

template <class _Tp>
_Tp
__load_seq_cst(_Tp const volatile* __obj)
{
    unique_lock<mutex> _(__not_atomic_mut());
    return *__obj;
}

// load bool

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_load_seq_cst(bool const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_b)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_load_acquire(bool const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_b)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_load_consume(bool const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_b)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_load_relaxed(bool const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_b)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load char

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_load_seq_cst(char const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_c)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_load_acquire(char const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_c)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_load_consume(char const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_c)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_load_relaxed(char const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_c)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load signed char

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_load_seq_cst(signed char const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_a)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_load_acquire(signed char const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_a)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_load_consume(signed char const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_a)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_load_relaxed(signed char const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_a)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load unsigned char

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_load_seq_cst(unsigned char const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_h)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_load_acquire(unsigned char const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_h)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_load_consume(unsigned char const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_h)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_load_relaxed(unsigned char const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_h)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS

// load char16_t

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_load_seq_cst(char16_t const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_Ds)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_load_acquire(char16_t const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_Ds)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_load_consume(char16_t const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_Ds)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_load_relaxed(char16_t const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_Ds)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load char32_t

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_load_seq_cst(char32_t const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_Di)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_load_acquire(char32_t const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_Di)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_load_consume(char32_t const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_Di)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_load_relaxed(char32_t const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_Di)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS

// load wchar_t

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_load_seq_cst(wchar_t const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_w)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_load_acquire(wchar_t const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_w)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_load_consume(wchar_t const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_w)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_load_relaxed(wchar_t const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_w)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load short

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_load_seq_cst(short const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_s)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_load_acquire(short const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_s)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_load_consume(short const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_s)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_load_relaxed(short const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_s)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load unsigned short

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_load_seq_cst(unsigned short const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_t)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_load_acquire(unsigned short const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_t)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_load_consume(unsigned short const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_t)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_load_relaxed(unsigned short const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_t)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load int

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_load_seq_cst(int const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_i)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_load_acquire(int const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_i)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_load_consume(int const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_i)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_load_relaxed(int const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_i)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load unsigned int

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_load_seq_cst(unsigned int const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_j)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_load_acquire(unsigned int const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_j)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_load_consume(unsigned int const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_j)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_load_relaxed(unsigned int const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_j)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load long

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_load_seq_cst(long const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_l)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_load_acquire(long const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_l)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_load_consume(long const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_l)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_load_relaxed(long const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_l)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load unsigned long

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_load_seq_cst(unsigned long const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_m)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_load_acquire(unsigned long const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_m)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_load_consume(unsigned long const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_m)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_load_relaxed(unsigned long const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_m)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load long long

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_load_seq_cst(long long const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_x)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_load_acquire(long long const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_x)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_load_consume(long long const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_x)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_load_relaxed(long long const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_x)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load unsigned long long

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_load_seq_cst(unsigned long long const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_y)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_load_acquire(unsigned long long const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_y)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_load_consume(unsigned long long const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_y)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_load_relaxed(unsigned long long const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_y)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// load void*

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_load_seq_cst(void* const volatile* __obj)
{
#if __has_feature(__atomic_load_seq_cst_Py)
    return __atomic_load_seq_cst(__obj);
#else
    return __load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_load_acquire(void* const volatile* __obj)
{
#if __has_feature(__atomic_load_acquire_Py)
    return __atomic_load_acquire(__obj);
#else
    return __choose_load_seq_cst(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_load_consume(void* const volatile* __obj)
{
#if __has_feature(__atomic_load_consume_Py)
    return __atomic_load_consume(__obj);
#else
    return __choose_load_acquire(__obj);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_load_relaxed(void* const volatile* __obj)
{
#if __has_feature(__atomic_load_relaxed_Py)
    return __atomic_load_relaxed(__obj);
#else
    return __choose_load_consume(__obj);
#endif
}

// store

template <class _Tp>
void
__store_seq_cst(_Tp volatile* __obj, _Tp __desr)
{
    unique_lock<mutex> _(__not_atomic_mut());
    *__obj = __desr;
}

// store bool

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(bool volatile* __obj, bool __desr)
{
#if __has_feature(__atomic_store_seq_cst_b)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(bool volatile* __obj, bool __desr)
{
#if __has_feature(__atomic_store_release_b)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(bool volatile* __obj, bool __desr)
{
#if __has_feature(__atomic_store_relaxed_b)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store char

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(char volatile* __obj, char __desr)
{
#if __has_feature(__atomic_store_seq_cst_c)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(char volatile* __obj, char __desr)
{
#if __has_feature(__atomic_store_release_c)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(char volatile* __obj, char __desr)
{
#if __has_feature(__atomic_store_relaxed_c)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store signed char

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(signed char volatile* __obj, signed char __desr)
{
#if __has_feature(__atomic_store_seq_cst_a)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(signed char volatile* __obj, signed char __desr)
{
#if __has_feature(__atomic_store_release_a)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(signed char volatile* __obj, signed char __desr)
{
#if __has_feature(__atomic_store_relaxed_a)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store unsigned char

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(unsigned char volatile* __obj, unsigned char __desr)
{
#if __has_feature(__atomic_store_seq_cst_h)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(unsigned char volatile* __obj, unsigned char __desr)
{
#if __has_feature(__atomic_store_release_h)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(unsigned char volatile* __obj, unsigned char __desr)
{
#if __has_feature(__atomic_store_relaxed_h)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS

// store char16_t

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(char16_t volatile* __obj, char16_t __desr)
{
#if __has_feature(__atomic_store_seq_cst_Ds)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(char16_t volatile* __obj, char16_t __desr)
{
#if __has_feature(__atomic_store_release_Ds)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(char16_t volatile* __obj, char16_t __desr)
{
#if __has_feature(__atomic_store_relaxed_Ds)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store char32_t

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(char32_t volatile* __obj, char32_t __desr)
{
#if __has_feature(__atomic_store_seq_cst_Di)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(char32_t volatile* __obj, char32_t __desr)
{
#if __has_feature(__atomic_store_release_Di)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(char32_t volatile* __obj, char32_t __desr)
{
#if __has_feature(__atomic_store_relaxed_Di)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS

// store wchar_t

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(wchar_t volatile* __obj, wchar_t __desr)
{
#if __has_feature(__atomic_store_seq_cst_w)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(wchar_t volatile* __obj, wchar_t __desr)
{
#if __has_feature(__atomic_store_release_w)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(wchar_t volatile* __obj, wchar_t __desr)
{
#if __has_feature(__atomic_store_relaxed_w)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store short

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(short volatile* __obj, short __desr)
{
#if __has_feature(__atomic_store_seq_cst_s)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(short volatile* __obj, short __desr)
{
#if __has_feature(__atomic_store_release_s)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(short volatile* __obj, short __desr)
{
#if __has_feature(__atomic_store_relaxed_s)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store unsigned short

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(unsigned short volatile* __obj, unsigned short __desr)
{
#if __has_feature(__atomic_store_seq_cst_t)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(unsigned short volatile* __obj, unsigned short __desr)
{
#if __has_feature(__atomic_store_release_t)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(unsigned short volatile* __obj, unsigned short __desr)
{
#if __has_feature(__atomic_store_relaxed_t)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store int

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(int volatile* __obj, int __desr)
{
#if __has_feature(__atomic_store_seq_cst_i)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(int volatile* __obj, int __desr)
{
#if __has_feature(__atomic_store_release_i)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(int volatile* __obj, int __desr)
{
#if __has_feature(__atomic_store_relaxed_i)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store unsigned int

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(unsigned int volatile* __obj, unsigned int __desr)
{
#if __has_feature(__atomic_store_seq_cst_j)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(unsigned int volatile* __obj, unsigned int __desr)
{
#if __has_feature(__atomic_store_release_j)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(unsigned int volatile* __obj, unsigned int __desr)
{
#if __has_feature(__atomic_store_relaxed_j)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store long

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(long volatile* __obj, long __desr)
{
#if __has_feature(__atomic_store_seq_cst_l)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(long volatile* __obj, long __desr)
{
#if __has_feature(__atomic_store_release_l)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(long volatile* __obj, long __desr)
{
#if __has_feature(__atomic_store_relaxed_l)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store unsigned long

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(unsigned long volatile* __obj, unsigned long __desr)
{
#if __has_feature(__atomic_store_seq_cst_m)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(unsigned long volatile* __obj, unsigned long __desr)
{
#if __has_feature(__atomic_store_release_m)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(unsigned long volatile* __obj, unsigned long __desr)
{
#if __has_feature(__atomic_store_relaxed_m)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store long long

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(long long volatile* __obj, long long __desr)
{
#if __has_feature(__atomic_store_seq_cst_x)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(long long volatile* __obj, long long __desr)
{
#if __has_feature(__atomic_store_release_x)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(long long volatile* __obj, long long __desr)
{
#if __has_feature(__atomic_store_relaxed_x)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store unsigned long long

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(unsigned long long volatile* __obj, unsigned long long __desr)
{
#if __has_feature(__atomic_store_seq_cst_y)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(unsigned long long volatile* __obj, unsigned long long __desr)
{
#if __has_feature(__atomic_store_release_y)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(unsigned long long volatile* __obj, unsigned long long __desr)
{
#if __has_feature(__atomic_store_relaxed_y)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// store void*

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_seq_cst(void* volatile* __obj, void* __desr)
{
#if __has_feature(__atomic_store_seq_cst_Py)
    __atomic_store_seq_cst(__obj, __desr);
#else
    __store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_release(void* volatile* __obj, void* __desr)
{
#if __has_feature(__atomic_store_release_Py)
    __atomic_store_release(__obj, __desr);
#else
    __choose_store_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void
__choose_store_relaxed(void* volatile* __obj, void* __desr)
{
#if __has_feature(__atomic_store_relaxed_Py)
    __atomic_store_relaxed(__obj, __desr);
#else
    __choose_store_release(__obj, __desr);
#endif
}

// exchange

template <class _Tp>
_Tp
__exchange_seq_cst(_Tp volatile* __obj, _Tp __desr)
{
    unique_lock<mutex> _(__not_atomic_mut());
    _Tp __r = *__obj;
    *__obj = __desr;
    return __r;
}

// exchange bool

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_exchange_seq_cst(bool volatile* __obj, bool __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_b)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_exchange_acq_rel(bool volatile* __obj, bool __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_b)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_exchange_release(bool volatile* __obj, bool __desr)
{
#if __has_feature(__atomic_exchange_release_b)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_exchange_acquire(bool volatile* __obj, bool __desr)
{
#if __has_feature(__atomic_exchange_acquire_b)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_exchange_consume(bool volatile* __obj, bool __desr)
{
#if __has_feature(__atomic_exchange_consume_b)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_exchange_relaxed(bool volatile* __obj, bool __desr)
{
#if __has_feature(__atomic_exchange_relaxed_b)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange char

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_exchange_seq_cst(char volatile* __obj, char __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_c)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_exchange_acq_rel(char volatile* __obj, char __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_c)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_exchange_release(char volatile* __obj, char __desr)
{
#if __has_feature(__atomic_exchange_release_c)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_exchange_acquire(char volatile* __obj, char __desr)
{
#if __has_feature(__atomic_exchange_acquire_c)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_exchange_consume(char volatile* __obj, char __desr)
{
#if __has_feature(__atomic_exchange_consume_c)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char
__choose_exchange_relaxed(char volatile* __obj, char __desr)
{
#if __has_feature(__atomic_exchange_relaxed_c)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange signed char

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_exchange_seq_cst(signed char volatile* __obj, signed char __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_a)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_exchange_acq_rel(signed char volatile* __obj, signed char __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_a)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_exchange_release(signed char volatile* __obj, signed char __desr)
{
#if __has_feature(__atomic_exchange_release_a)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_exchange_acquire(signed char volatile* __obj, signed char __desr)
{
#if __has_feature(__atomic_exchange_acquire_a)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_exchange_consume(signed char volatile* __obj, signed char __desr)
{
#if __has_feature(__atomic_exchange_consume_a)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
signed char
__choose_exchange_relaxed(signed char volatile* __obj, signed char __desr)
{
#if __has_feature(__atomic_exchange_relaxed_a)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange unsigned char

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_exchange_seq_cst(unsigned char volatile* __obj, unsigned char __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_h)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_exchange_acq_rel(unsigned char volatile* __obj, unsigned char __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_h)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_exchange_release(unsigned char volatile* __obj, unsigned char __desr)
{
#if __has_feature(__atomic_exchange_release_h)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_exchange_acquire(unsigned char volatile* __obj, unsigned char __desr)
{
#if __has_feature(__atomic_exchange_acquire_h)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_exchange_consume(unsigned char volatile* __obj, unsigned char __desr)
{
#if __has_feature(__atomic_exchange_consume_h)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned char
__choose_exchange_relaxed(unsigned char volatile* __obj, unsigned char __desr)
{
#if __has_feature(__atomic_exchange_relaxed_h)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS

// exchange char16_t

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_exchange_seq_cst(char16_t volatile* __obj, char16_t __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_Ds)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_exchange_acq_rel(char16_t volatile* __obj, char16_t __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_Ds)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_exchange_release(char16_t volatile* __obj, char16_t __desr)
{
#if __has_feature(__atomic_exchange_release_Ds)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_exchange_acquire(char16_t volatile* __obj, char16_t __desr)
{
#if __has_feature(__atomic_exchange_acquire_Ds)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_exchange_consume(char16_t volatile* __obj, char16_t __desr)
{
#if __has_feature(__atomic_exchange_consume_Ds)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char16_t
__choose_exchange_relaxed(char16_t volatile* __obj, char16_t __desr)
{
#if __has_feature(__atomic_exchange_relaxed_Ds)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange char32_t

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_exchange_seq_cst(char32_t volatile* __obj, char32_t __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_Di)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_exchange_acq_rel(char32_t volatile* __obj, char32_t __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_Di)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_exchange_release(char32_t volatile* __obj, char32_t __desr)
{
#if __has_feature(__atomic_exchange_release_Di)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_exchange_acquire(char32_t volatile* __obj, char32_t __desr)
{
#if __has_feature(__atomic_exchange_acquire_Di)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_exchange_consume(char32_t volatile* __obj, char32_t __desr)
{
#if __has_feature(__atomic_exchange_consume_Di)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
char32_t
__choose_exchange_relaxed(char32_t volatile* __obj, char32_t __desr)
{
#if __has_feature(__atomic_exchange_relaxed_Di)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS

// exchange wchar_t

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_exchange_seq_cst(wchar_t volatile* __obj, wchar_t __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_w)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_exchange_acq_rel(wchar_t volatile* __obj, wchar_t __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_w)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_exchange_release(wchar_t volatile* __obj, wchar_t __desr)
{
#if __has_feature(__atomic_exchange_release_w)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_exchange_acquire(wchar_t volatile* __obj, wchar_t __desr)
{
#if __has_feature(__atomic_exchange_acquire_w)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_exchange_consume(wchar_t volatile* __obj, wchar_t __desr)
{
#if __has_feature(__atomic_exchange_consume_w)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
wchar_t
__choose_exchange_relaxed(wchar_t volatile* __obj, wchar_t __desr)
{
#if __has_feature(__atomic_exchange_relaxed_w)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange short

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_exchange_seq_cst(short volatile* __obj, short __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_s)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_exchange_acq_rel(short volatile* __obj, short __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_s)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_exchange_release(short volatile* __obj, short __desr)
{
#if __has_feature(__atomic_exchange_release_s)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_exchange_acquire(short volatile* __obj, short __desr)
{
#if __has_feature(__atomic_exchange_acquire_s)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_exchange_consume(short volatile* __obj, short __desr)
{
#if __has_feature(__atomic_exchange_consume_s)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
short
__choose_exchange_relaxed(short volatile* __obj, short __desr)
{
#if __has_feature(__atomic_exchange_relaxed_s)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange unsigned short

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_exchange_seq_cst(unsigned short volatile* __obj, unsigned short __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_t)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_exchange_acq_rel(unsigned short volatile* __obj, unsigned short __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_t)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_exchange_release(unsigned short volatile* __obj, unsigned short __desr)
{
#if __has_feature(__atomic_exchange_release_t)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_exchange_acquire(unsigned short volatile* __obj, unsigned short __desr)
{
#if __has_feature(__atomic_exchange_acquire_t)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_exchange_consume(unsigned short volatile* __obj, unsigned short __desr)
{
#if __has_feature(__atomic_exchange_consume_t)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned short
__choose_exchange_relaxed(unsigned short volatile* __obj, unsigned short __desr)
{
#if __has_feature(__atomic_exchange_relaxed_t)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange int

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_exchange_seq_cst(int volatile* __obj, int __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_i)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_exchange_acq_rel(int volatile* __obj, int __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_i)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_exchange_release(int volatile* __obj, int __desr)
{
#if __has_feature(__atomic_exchange_release_i)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_exchange_acquire(int volatile* __obj, int __desr)
{
#if __has_feature(__atomic_exchange_acquire_i)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_exchange_consume(int volatile* __obj, int __desr)
{
#if __has_feature(__atomic_exchange_consume_i)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
int
__choose_exchange_relaxed(int volatile* __obj, int __desr)
{
#if __has_feature(__atomic_exchange_relaxed_i)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange unsigned int

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_exchange_seq_cst(unsigned int volatile* __obj, unsigned int __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_j)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_exchange_acq_rel(unsigned int volatile* __obj, unsigned int __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_j)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_exchange_release(unsigned int volatile* __obj, unsigned int __desr)
{
#if __has_feature(__atomic_exchange_release_j)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_exchange_acquire(unsigned int volatile* __obj, unsigned int __desr)
{
#if __has_feature(__atomic_exchange_acquire_j)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_exchange_consume(unsigned int volatile* __obj, unsigned int __desr)
{
#if __has_feature(__atomic_exchange_consume_j)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned int
__choose_exchange_relaxed(unsigned int volatile* __obj, unsigned int __desr)
{
#if __has_feature(__atomic_exchange_relaxed_j)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange long

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_exchange_seq_cst(long volatile* __obj, long __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_l)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_exchange_acq_rel(long volatile* __obj, long __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_l)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_exchange_release(long volatile* __obj, long __desr)
{
#if __has_feature(__atomic_exchange_release_l)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_exchange_acquire(long volatile* __obj, long __desr)
{
#if __has_feature(__atomic_exchange_acquire_l)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_exchange_consume(long volatile* __obj, long __desr)
{
#if __has_feature(__atomic_exchange_consume_l)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long
__choose_exchange_relaxed(long volatile* __obj, long __desr)
{
#if __has_feature(__atomic_exchange_relaxed_l)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange unsigned long

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_exchange_seq_cst(unsigned long volatile* __obj, unsigned long __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_m)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_exchange_acq_rel(unsigned long volatile* __obj, unsigned long __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_m)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_exchange_release(unsigned long volatile* __obj, unsigned long __desr)
{
#if __has_feature(__atomic_exchange_release_m)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_exchange_acquire(unsigned long volatile* __obj, unsigned long __desr)
{
#if __has_feature(__atomic_exchange_acquire_m)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_exchange_consume(unsigned long volatile* __obj, unsigned long __desr)
{
#if __has_feature(__atomic_exchange_consume_m)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long
__choose_exchange_relaxed(unsigned long volatile* __obj, unsigned long __desr)
{
#if __has_feature(__atomic_exchange_relaxed_m)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange long long

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_exchange_seq_cst(long long volatile* __obj, long long __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_x)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_exchange_acq_rel(long long volatile* __obj, long long __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_x)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_exchange_release(long long volatile* __obj, long long __desr)
{
#if __has_feature(__atomic_exchange_release_x)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_exchange_acquire(long long volatile* __obj, long long __desr)
{
#if __has_feature(__atomic_exchange_acquire_x)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_exchange_consume(long long volatile* __obj, long long __desr)
{
#if __has_feature(__atomic_exchange_consume_x)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
long long
__choose_exchange_relaxed(long long volatile* __obj, long long __desr)
{
#if __has_feature(__atomic_exchange_relaxed_x)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange unsigned long long

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_exchange_seq_cst(unsigned long long volatile* __obj, unsigned long long __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_y)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_exchange_acq_rel(unsigned long long volatile* __obj, unsigned long long __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_y)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_exchange_release(unsigned long long volatile* __obj, unsigned long long __desr)
{
#if __has_feature(__atomic_exchange_release_y)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_exchange_acquire(unsigned long long volatile* __obj, unsigned long long __desr)
{
#if __has_feature(__atomic_exchange_acquire_y)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_exchange_consume(unsigned long long volatile* __obj, unsigned long long __desr)
{
#if __has_feature(__atomic_exchange_consume_y)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
unsigned long long
__choose_exchange_relaxed(unsigned long long volatile* __obj, unsigned long long __desr)
{
#if __has_feature(__atomic_exchange_relaxed_y)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// exchange void*

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_exchange_seq_cst(void* volatile* __obj, void* __desr)
{
#if __has_feature(__atomic_exchange_seq_cst_Py)
    return __atomic_exchange_seq_cst(__obj, __desr);
#else
    return __exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_exchange_acq_rel(void* volatile* __obj, void* __desr)
{
#if __has_feature(__atomic_exchange_acq_rel_Py)
    return __atomic_exchange_acq_rel(__obj, __desr);
#else
    return __choose_exchange_seq_cst(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_exchange_release(void* volatile* __obj, void* __desr)
{
#if __has_feature(__atomic_exchange_release_Py)
    return __atomic_exchange_release(__obj, __desr);
#else
    return __choose_exchange_acq_rel(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_exchange_acquire(void* volatile* __obj, void* __desr)
{
#if __has_feature(__atomic_exchange_acquire_Py)
    return __atomic_exchange_acquire(__obj, __desr);
#else
    return __choose_exchange_release(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_exchange_consume(void* volatile* __obj, void* __desr)
{
#if __has_feature(__atomic_exchange_consume_Py)
    return __atomic_exchange_consume(__obj, __desr);
#else
    return __choose_exchange_acquire(__obj, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
void*
__choose_exchange_relaxed(void* volatile* __obj, void* __desr)
{
#if __has_feature(__atomic_exchange_relaxed_Py)
    return __atomic_exchange_relaxed(__obj, __desr);
#else
    return __choose_exchange_consume(__obj, __desr);
#endif
}

// compare_exchange_strong

template <class _Tp>
bool
__compare_exchange_strong_seq_cst_seq_cst(_Tp volatile* __obj, _Tp* __exp,
                                                                     _Tp __desr)
{
    unique_lock<mutex> _(__not_atomic_mut());
    if (_STD::memcmp(const_cast<_Tp*>(__obj), __exp, sizeof(_Tp)) == 0)
    {
        _STD::memcpy(const_cast<_Tp*>(__obj), &__desr, sizeof(_Tp));
        return true;
    }
    _STD::memcpy(__exp, const_cast<_Tp*>(__obj), sizeof(_Tp));
    return false;
}

// compare_exchange_strong bool

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_b)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_b)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_b)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_b)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_b)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_b)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_b)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_b)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_b)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_b)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_b)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_b)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_b)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_b)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_b)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(bool volatile* __obj,
                                                 bool* __exp,
                                                 bool __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_b)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong char

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_c)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_c)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_c)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_c)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_c)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_c)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_c)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_c)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_c)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_c)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_c)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_c)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_c)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_c)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_c)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(char volatile* __obj,
                                                 char* __exp,
                                                 char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_c)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong signed char

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_a)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_a)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_a)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_a)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_a)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_a)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_a)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_a)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_a)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_a)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_a)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_a)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_a)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_a)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_a)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(signed char volatile* __obj,
                                                 signed char* __exp,
                                                 signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_a)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong unsigned char

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_h)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_h)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_h)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_h)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_h)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_h)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_h)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_h)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_h)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_h)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_h)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_h)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_h)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_h)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_h)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(unsigned char volatile* __obj,
                                                 unsigned char* __exp,
                                                 unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_h)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS

// compare_exchange_strong char16_t

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_Ds)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_Ds)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_Ds)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_Ds)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_Ds)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_Ds)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_Ds)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_Ds)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_Ds)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_Ds)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_Ds)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_Ds)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_Ds)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_Ds)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_Ds)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(char16_t volatile* __obj,
                                                 char16_t* __exp,
                                                 char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_Ds)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong char32_t

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_Di)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_Di)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_Di)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_Di)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_Di)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_Di)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_Di)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_Di)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_Di)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_Di)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_Di)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_Di)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_Di)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_Di)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_Di)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(char32_t volatile* __obj,
                                                 char32_t* __exp,
                                                 char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_Di)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS

// compare_exchange_strong wchar_t

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_w)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_w)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_w)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_w)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_w)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_w)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_w)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_w)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_w)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_w)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_w)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_w)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_w)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_w)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_w)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(wchar_t volatile* __obj,
                                                 wchar_t* __exp,
                                                 wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_w)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong short

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_s)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_s)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_s)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_s)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_s)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_s)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_s)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_s)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_s)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_s)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_s)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_s)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_s)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_s)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_s)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(short volatile* __obj,
                                                 short* __exp,
                                                 short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_s)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong unsigned short

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_t)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_t)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_t)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_t)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_t)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_t)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_t)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_t)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_t)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_t)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_t)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_t)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_t)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_t)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_t)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(unsigned short volatile* __obj,
                                                 unsigned short* __exp,
                                                 unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_t)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong int

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_i)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_i)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_i)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_i)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_i)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_i)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_i)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_i)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_i)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_i)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_i)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_i)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_i)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_i)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_i)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(int volatile* __obj,
                                                 int* __exp,
                                                 int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_i)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong unsigned int

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_j)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_j)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_j)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_j)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_j)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_j)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_j)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_j)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_j)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_j)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_j)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_j)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_j)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_j)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_j)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(unsigned int volatile* __obj,
                                                 unsigned int* __exp,
                                                 unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_j)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong long

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_l)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_l)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_l)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_l)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_l)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_l)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_l)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_l)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_l)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_l)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_l)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_l)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_l)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_l)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_l)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(long volatile* __obj,
                                                 long* __exp,
                                                 long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_l)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong unsigned long

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_m)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_m)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_m)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_m)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_m)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_m)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_m)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_m)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_m)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_m)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_m)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_m)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_m)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_m)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_m)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(unsigned long volatile* __obj,
                                                 unsigned long* __exp,
                                                 unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_m)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong long long

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_x)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_x)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_x)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_x)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_x)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_x)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_x)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_x)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_x)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_x)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_x)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_x)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_x)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_x)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_x)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(long long volatile* __obj,
                                                 long long* __exp,
                                                 long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_x)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong unsigned long long

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_y)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_y)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_y)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_y)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_y)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_y)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_y)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_y)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_y)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_y)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_y)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_y)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_y)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_y)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_y)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(unsigned long long volatile* __obj,
                                                 unsigned long long* __exp,
                                                 unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_y)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_strong void*

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_seq_cst(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_seq_cst_Py)
    return __atomic_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __compare_exchange_strong_seq_cst_seq_cst(__obj, __exp, __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_acquire(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_acquire_Py)
    return __atomic_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_consume(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_consume_Py)
    return __atomic_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_seq_cst_relaxed(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_seq_cst_relaxed_Py)
    return __atomic_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_acquire(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_acquire_Py)
    return __atomic_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_consume(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_consume_Py)
    return __atomic_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acq_rel_relaxed(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acq_rel_relaxed_Py)
    return __atomic_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_acquire(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_acquire_Py)
    return __atomic_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_consume(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_consume_Py)
    return __atomic_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_release_relaxed(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_release_relaxed_Py)
    return __atomic_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_acquire(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_acquire_Py)
    return __atomic_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_consume(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_consume_Py)
    return __atomic_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_acquire_relaxed(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_acquire_relaxed_Py)
    return __atomic_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_consume(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_consume_Py)
    return __atomic_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_consume_relaxed(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_consume_relaxed_Py)
    return __atomic_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_strong_relaxed_relaxed(void* volatile* __obj,
                                                 void** __exp,
                                                 void* __desr)
{
#if __has_feature(__atomic_compare_exchange_strong_relaxed_relaxed_Py)
    return __atomic_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak bool

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_b)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_b)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_b)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_b)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_b)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_b)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_b)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_b)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_b)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_b)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_b)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_b)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_b)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_b)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_b)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(bool volatile* __obj,
                                               bool* __exp,
                                               bool __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_b)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak signed char

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_a)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_a)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_a)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_a)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_a)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_a)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_a)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_a)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_a)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_a)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_a)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_a)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_a)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_a)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_a)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(signed char volatile* __obj,
                                               signed char* __exp,
                                               signed char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_a)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak unsigned char

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_h)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_h)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_h)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_h)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_h)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_h)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_h)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_h)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_h)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_h)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_h)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_h)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_h)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_h)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_h)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(unsigned char volatile* __obj,
                                               unsigned char* __exp,
                                               unsigned char __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_h)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS

// compare_exchange_weak char16_t

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_Ds)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_Ds)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_Ds)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_Ds)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_Ds)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_Ds)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_Ds)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_Ds)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_Ds)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_Ds)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_Ds)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_Ds)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_Ds)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_Ds)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_Ds)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(char16_t volatile* __obj,
                                               char16_t* __exp,
                                               char16_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_Ds)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak char32_t

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_Di)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_Di)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_Di)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_Di)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_Di)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_Di)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_Di)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_Di)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_Di)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_Di)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_Di)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_Di)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_Di)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_Di)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_Di)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(char32_t volatile* __obj,
                                               char32_t* __exp,
                                               char32_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_Di)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

#endif  // _LIBCPP_HAS_NO_UNICODE_CHARS

// compare_exchange_weak wchar_t

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_w)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_w)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_w)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_w)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_w)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_w)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_w)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_w)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_w)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_w)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_w)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_w)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_w)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_w)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_w)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(wchar_t volatile* __obj,
                                               wchar_t* __exp,
                                               wchar_t __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_w)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak short

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_s)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_s)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_s)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_s)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_s)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_s)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_s)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_s)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_s)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_s)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_s)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_s)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_s)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_s)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_s)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(short volatile* __obj,
                                               short* __exp,
                                               short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_s)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak unsigned short

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_t)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_t)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_t)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_t)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_t)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_t)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_t)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_t)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_t)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_t)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_t)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_t)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_t)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_t)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_t)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(unsigned short volatile* __obj,
                                               unsigned short* __exp,
                                               unsigned short __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_t)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak int

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_i)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_i)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_i)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_i)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_i)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_i)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_i)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_i)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_i)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_i)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_i)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_i)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_i)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_i)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_i)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(int volatile* __obj,
                                               int* __exp,
                                               int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_i)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak unsigned int

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_j)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_j)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_j)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_j)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_j)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_j)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_j)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_j)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_j)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_j)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_j)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_j)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_j)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_j)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_j)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(unsigned int volatile* __obj,
                                               unsigned int* __exp,
                                               unsigned int __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_j)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak long

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_l)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_l)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_l)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_l)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_l)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_l)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_l)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_l)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_l)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_l)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_l)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_l)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_l)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_l)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_l)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(long volatile* __obj,
                                               long* __exp,
                                               long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_l)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak unsigned long

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_m)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_m)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_m)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_m)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_m)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_m)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_m)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_m)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_m)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_m)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_m)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_m)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_m)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_m)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_m)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(unsigned long volatile* __obj,
                                               unsigned long* __exp,
                                               unsigned long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_m)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak long long

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_x)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_x)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_x)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_x)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_x)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_x)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_x)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_x)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_x)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_x)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_x)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_x)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_x)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_x)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_x)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(long long volatile* __obj,
                                               long long* __exp,
                                               long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_x)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak unsigned long long

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_y)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_y)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_y)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_y)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_y)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_y)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_y)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_y)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_y)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_y)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_y)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_y)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_y)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_y)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_y)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(unsigned long long volatile* __obj,
                                               unsigned long long* __exp,
                                               unsigned long long __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_y)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// compare_exchange_weak void*

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_seq_cst(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_seq_cst_Py)
    return __atomic_compare_exchange_weak_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_seq_cst(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_acquire(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_acquire_Py)
    return __atomic_compare_exchange_weak_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_consume(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_consume_Py)
    return __atomic_compare_exchange_weak_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_seq_cst_relaxed(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_seq_cst_relaxed_Py)
    return __atomic_compare_exchange_weak_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_seq_cst_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_acquire(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_acquire_Py)
    return __atomic_compare_exchange_weak_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_consume(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_consume_Py)
    return __atomic_compare_exchange_weak_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acq_rel_relaxed(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acq_rel_relaxed_Py)
    return __atomic_compare_exchange_weak_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acq_rel_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_acquire(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_acquire_Py)
    return __atomic_compare_exchange_weak_release_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_consume(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_consume_Py)
    return __atomic_compare_exchange_weak_release_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_release_relaxed(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_release_relaxed_Py)
    return __atomic_compare_exchange_weak_release_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_release_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_acquire(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_acquire_Py)
    return __atomic_compare_exchange_weak_acquire_acquire(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_acquire(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_consume(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_consume_Py)
    return __atomic_compare_exchange_weak_acquire_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_acquire_relaxed(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_acquire_relaxed_Py)
    return __atomic_compare_exchange_weak_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_acquire_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_consume(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_consume_Py)
    return __atomic_compare_exchange_weak_consume_consume(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_consume(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_consume_relaxed(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_consume_relaxed_Py)
    return __atomic_compare_exchange_weak_consume_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_consume_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool
__choose_compare_exchange_weak_relaxed_relaxed(void* volatile* __obj,
                                               void** __exp,
                                               void* __desr)
{
#if __has_feature(__atomic_compare_exchange_weak_relaxed_relaxed_Py)
    return __atomic_compare_exchange_weak_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#else
    return __choose_compare_exchange_strong_relaxed_relaxed(__obj, __exp,
                                                                        __desr);
#endif
}

// flag type and operations

#if !__has_feature(__atomic_flag)
    typedef bool __atomic_flag__;
#endif

struct atomic_flag;

bool atomic_flag_test_and_set(volatile atomic_flag*);
bool atomic_flag_test_and_set(atomic_flag*);
bool atomic_flag_test_and_set_explicit(volatile atomic_flag*, memory_order);
bool atomic_flag_test_and_set_explicit(atomic_flag*, memory_order);
void atomic_flag_clear(volatile atomic_flag*);
void atomic_flag_clear(atomic_flag*);
void atomic_flag_clear_explicit(volatile atomic_flag*, memory_order);
void atomic_flag_clear_explicit(atomic_flag*, memory_order);

typedef struct _LIBCPP_VISIBLE atomic_flag
{
    __atomic_flag__ __flg_;

    _LIBCPP_INLINE_VISIBILITY
    bool test_and_set() volatile
        {return atomic_flag_test_and_set(this);}
    _LIBCPP_INLINE_VISIBILITY
    bool test_and_set(memory_order __o) volatile
        {return atomic_flag_test_and_set_explicit(this, __o);}
    _LIBCPP_INLINE_VISIBILITY
    bool test_and_set()
        {return atomic_flag_test_and_set(this);}
    _LIBCPP_INLINE_VISIBILITY
    bool test_and_set(memory_order __o)
        {return atomic_flag_test_and_set_explicit(this, __o);}

    _LIBCPP_INLINE_VISIBILITY
    void clear() volatile
        {atomic_flag_clear(this);}
    _LIBCPP_INLINE_VISIBILITY
    void clear(memory_order __o) volatile
        {atomic_flag_clear_explicit(this, __o);}
    _LIBCPP_INLINE_VISIBILITY
    void clear()
        {atomic_flag_clear(this);}
    _LIBCPP_INLINE_VISIBILITY
    void clear(memory_order __o)
        {atomic_flag_clear_explicit(this, __o);}

#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
    atomic_flag() = default;
#else
    _LIBCPP_INLINE_VISIBILITY
    atomic_flag() {};
#endif

#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS
    atomic_flag(const atomic_flag&) = delete;
    atomic_flag& operator=(const atomic_flag&) = delete;
    atomic_flag& operator=(const atomic_flag&) volatile = delete;
#else
private:
    atomic_flag(const atomic_flag&);
    atomic_flag& operator=(const atomic_flag&);
    atomic_flag& operator=(const atomic_flag&) volatile;
public:
#endif
} atomic_flag;

inline _LIBCPP_INLINE_VISIBILITY
bool
atomic_flag_test_and_set(volatile atomic_flag* __f)
{
    return __choose_exchange_seq_cst(&__f->__flg_, __atomic_flag__(true))
            == __atomic_flag__(true);
}

inline _LIBCPP_INLINE_VISIBILITY
bool
atomic_flag_test_and_set(atomic_flag* __f)
{
    return atomic_flag_test_and_set(const_cast<volatile atomic_flag*>(__f));
}

inline _LIBCPP_INLINE_VISIBILITY
bool
atomic_flag_test_and_set_explicit(volatile atomic_flag* __f, memory_order __o)
{
    switch (__o)
    {
    case memory_order_relaxed:
        return __choose_exchange_relaxed(&__f->__flg_, __atomic_flag__(true))
            == __atomic_flag__(true);
    case memory_order_consume:
        return __choose_exchange_consume(&__f->__flg_, __atomic_flag__(true))
            == __atomic_flag__(true);
    case memory_order_acquire:
        return __choose_exchange_acquire(&__f->__flg_, __atomic_flag__(true))
            == __atomic_flag__(true);
    case memory_order_release:
        return __choose_exchange_release(&__f->__flg_, __atomic_flag__(true))
            == __atomic_flag__(true);
    case memory_order_acq_rel:
        return __choose_exchange_acq_rel(&__f->__flg_, __atomic_flag__(true))
            == __atomic_flag__(true);
    case memory_order_seq_cst:
        return __choose_exchange_seq_cst(&__f->__flg_, __atomic_flag__(true))
            == __atomic_flag__(true);
    }
}

inline _LIBCPP_INLINE_VISIBILITY
bool
atomic_flag_test_and_set_explicit(atomic_flag* __f, memory_order __o)
{
    return atomic_flag_test_and_set_explicit(const_cast<volatile atomic_flag*>
                                                                    (__f), __o);
}

inline _LIBCPP_INLINE_VISIBILITY
void
atomic_flag_clear(volatile atomic_flag* __f)
{
    __choose_store_seq_cst(&__f->__flg_, __atomic_flag__(false));
}

inline _LIBCPP_INLINE_VISIBILITY
void
atomic_flag_clear(atomic_flag* __f)
{
    atomic_flag_clear(const_cast<volatile atomic_flag*>(__f));
}

inline _LIBCPP_INLINE_VISIBILITY
void
atomic_flag_clear_explicit(volatile atomic_flag* __f, memory_order __o)
{
    switch (__o)
    {
    case memory_order_relaxed:
        __choose_store_relaxed(&__f->__flg_, __atomic_flag__(false));
        break;
    case memory_order_release:
        __choose_store_release(&__f->__flg_, __atomic_flag__(false));
        break;
    case memory_order_seq_cst:
        __choose_store_seq_cst(&__f->__flg_, __atomic_flag__(false));
        break;
    }
}

inline _LIBCPP_INLINE_VISIBILITY
void
atomic_flag_clear_explicit(atomic_flag* __f, memory_order __o)
{
    atomic_flag_clear_explicit(const_cast<volatile atomic_flag*>(__f), __o);
}

#define ATOMIC_FLAG_INIT {false}
#define ATOMIC_VAR_INIT(__v) {__v}

inline _LIBCPP_INLINE_VISIBILITY
memory_order
__translate_memory_order(memory_order __o)
{
    switch (__o)
    {
    case memory_order_acq_rel:
        return memory_order_acquire;
    case memory_order_release:
        return memory_order_relaxed;
    }
    return __o;
}

// atomic_bool

struct atomic_bool;

bool atomic_is_lock_free(const volatile atomic_bool*);
bool atomic_is_lock_free(const atomic_bool*);
void atomic_init(volatile atomic_bool*, bool);
void atomic_init(atomic_bool*, bool);
void atomic_store(volatile atomic_bool*, bool);
void atomic_store(atomic_bool*, bool);
void atomic_store_explicit(volatile atomic_bool*, bool, memory_order);
void atomic_store_explicit(atomic_bool*, bool, memory_order);
bool atomic_load(const volatile atomic_bool*);
bool atomic_load(const atomic_bool*);
bool atomic_load_explicit(const volatile atomic_bool*, memory_order);
bool atomic_load_explicit(const atomic_bool*, memory_order);
bool atomic_exchange(volatile atomic_bool*, bool);
bool atomic_exchange(atomic_bool*, bool);
bool atomic_exchange_explicit(volatile atomic_bool*, bool, memory_order);
bool atomic_exchange_explicit(atomic_bool*, bool, memory_order);
bool atomic_compare_exchange_weak(volatile atomic_bool*, bool*, bool);
bool atomic_compare_exchange_weak(atomic_bool*, bool*, bool);
bool atomic_compare_exchange_strong(volatile atomic_bool*, bool*, bool);
bool atomic_compare_exchange_strong(atomic_bool*, bool*, bool);
bool atomic_compare_exchange_weak_explicit(volatile atomic_bool*, bool*, bool,
                                           memory_order, memory_order);
bool atomic_compare_exchange_weak_explicit(atomic_bool*, bool*, bool,
                                           memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(volatile atomic_bool*, bool*, bool,
                                             memory_order, memory_order);
bool atomic_compare_exchange_strong_explicit(atomic_bool*, bool*, bool,
                                             memory_order, memory_order);

typedef struct atomic_bool
{
    bool __v_;

    _LIBCPP_INLINE_VISIBILITY
    bool is_lock_free() const volatile
        {return atomic_is_lock_free(this);}
    _LIBCPP_INLINE_VISIBILITY
    bool is_lock_free() const
        {return atomic_is_lock_free(this);}
    _LIBCPP_INLINE_VISIBILITY
    void store(bool __v) volatile
        {atomic_store(this, __v);}
    _LIBCPP_INLINE_VISIBILITY
    void store(bool __v, memory_order __o) volatile
        {atomic_store_explicit(this, __v, __o);}
    _LIBCPP_INLINE_VISIBILITY
    void store(bool __v)
        {atomic_store(this, __v);}
    _LIBCPP_INLINE_VISIBILITY
    void store(bool __v, memory_order __o)
        {atomic_store_explicit(this, __v, __o);}
    _LIBCPP_INLINE_VISIBILITY
    bool load() const volatile
        {return atomic_load(this);}
    _LIBCPP_INLINE_VISIBILITY
    bool load(memory_order __o) const volatile
        {return atomic_load_explicit(this, __o);}
    _LIBCPP_INLINE_VISIBILITY
    bool load() const
        {return atomic_load(this);}
    _LIBCPP_INLINE_VISIBILITY
    bool load(memory_order __o) const
        {return atomic_load_explicit(this, __o);}
    _LIBCPP_INLINE_VISIBILITY
    operator bool() const volatile
        {return load();}
    _LIBCPP_INLINE_VISIBILITY
    operator bool() const
        {return load();}
    _LIBCPP_INLINE_VISIBILITY
    bool exchange(bool __v) volatile
        {return atomic_exchange(this, __v);}
    _LIBCPP_INLINE_VISIBILITY
    bool exchange(bool __v, memory_order __o) volatile
        {return atomic_exchange_explicit(this, __v, __o);}
    _LIBCPP_INLINE_VISIBILITY
    bool exchange(bool __v)
        {return atomic_exchange(this, __v);}
    _LIBCPP_INLINE_VISIBILITY
    bool exchange(bool __v, memory_order __o)
        {return atomic_exchange_explicit(this, __v, __o);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_weak(bool& __v, bool __e, memory_order __s,
                               memory_order __f) volatile
        {return atomic_compare_exchange_weak_explicit(this, &__v, __e, __s,
                                                                          __f);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_weak(bool& __v, bool __e, memory_order __s) volatile
        {return atomic_compare_exchange_weak_explicit(this, &__v, __e, __s,
                                                                          __s);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_weak(bool& __v, bool __e) volatile
        {return atomic_compare_exchange_weak(this, &__v, __e);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_weak(bool& __v, bool __e, memory_order __s,
                               memory_order __f)
        {return atomic_compare_exchange_weak_explicit(this, &__v, __e, __s,
                                                                          __f);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_weak(bool& __v, bool __e, memory_order __s)
        {return atomic_compare_exchange_weak_explicit(this, &__v, __e, __s,
                                                                          __s);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_weak(bool& __v, bool __e)
        {return atomic_compare_exchange_weak(this, &__v, __e);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_strong(bool& __v, bool __e, memory_order __s,
                                 memory_order __f) volatile
        {return atomic_compare_exchange_strong_explicit(this, &__v, __e, __s,
                                                                          __f);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_strong(bool& __v, bool __e, memory_order __s) volatile
        {return atomic_compare_exchange_strong_explicit(this, &__v, __e, __s,
                                                                          __s);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_strong(bool& __v, bool __e) volatile
        {return atomic_compare_exchange_strong(this, &__v, __e);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_strong(bool& __v, bool __e, memory_order __s,
                                 memory_order __f)
        {return atomic_compare_exchange_strong_explicit(this, &__v, __e, __s,
                                                                          __f);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_strong(bool& __v, bool __e, memory_order __s)
        {return atomic_compare_exchange_strong_explicit(this, &__v, __e, __s,
                                                                          __s);}
    _LIBCPP_INLINE_VISIBILITY
    bool compare_exchange_strong(bool& __v, bool __e)
        {return atomic_compare_exchange_strong(this, &__v, __e);}
#ifndef _LIBCPP_HAS_NO_DEFAULTED_FUNCTIONS
    atomic_bool() = default;
#else
    _LIBCPP_INLINE_VISIBILITY
    atomic_bool() {}
#endif
    _LIBCPP_INLINE_VISIBILITY
    /*constexpr*/ atomic_bool(bool __v)
        : __v_(__v) {}
#ifndef _LIBCPP_HAS_NO_DELETED_FUNCTIONS
    atomic_bool(const atomic_bool&) = delete;
    atomic_bool& operator=(const atomic_bool&) = delete;
    atomic_bool& operator=(const atomic_bool&) volatile = delete;
#else
private:
    atomic_bool(const atomic_bool&);
    atomic_bool& operator=(const atomic_bool&);
    atomic_bool& operator=(const atomic_bool&) volatile;
public:
#endif
    _LIBCPP_INLINE_VISIBILITY
    bool operator=(bool __v) volatile
        {store(__v); return __v;}
} atomic_bool;

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_is_lock_free(const volatile atomic_bool*)
{
#if __has_feature(__atomic_store_seq_cst_b) && \
    __has_feature(__atomic_load_seq_cst_b) && \
    __has_feature(__atomic_exchange_seq_cst_b) && \
    __has_feature(__atomic_compare_strong_weak_seq_cst_seq_cst_b)
    return true;
#else
    return false;
#endif
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_is_lock_free(const atomic_bool* __obj)
{
    return atomic_is_lock_free(const_cast<const volatile atomic_bool*>(__obj));
}

inline _LIBCPP_INLINE_VISIBILITY
void atomic_init(volatile atomic_bool* __obj, bool __desr)
{
    __obj->__v_ = __desr;
}

inline _LIBCPP_INLINE_VISIBILITY
void atomic_init(atomic_bool* __obj, bool __desr)
{
    __obj->__v_ = __desr;
}

inline _LIBCPP_INLINE_VISIBILITY
void atomic_store(volatile atomic_bool* __obj, bool __desr)
{
    __choose_store_seq_cst(&__obj->__v_, __desr);
}

inline _LIBCPP_INLINE_VISIBILITY
void atomic_store(atomic_bool* __obj, bool __desr)
{
    atomic_store(const_cast<volatile atomic_bool*>(__obj), __desr);
}

inline _LIBCPP_INLINE_VISIBILITY
void atomic_store_explicit(volatile atomic_bool* __obj, bool __desr,
                           memory_order __o)
{
    switch (__o)
    {
    case memory_order_relaxed:
        __choose_store_relaxed(&__obj->__v_, __desr);
        break;
    case memory_order_release:
        __choose_store_release(&__obj->__v_, __desr);
        break;
    case memory_order_seq_cst:
        __choose_store_seq_cst(&__obj->__v_, __desr);
        break;
    }
}

inline _LIBCPP_INLINE_VISIBILITY
void atomic_store_explicit(atomic_bool* __obj, bool __desr, memory_order __o)
{
    atomic_store_explicit(const_cast<volatile atomic_bool*>(__obj), __desr,
                                                                           __o);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_load(const volatile atomic_bool* __obj)
{
    return __choose_load_seq_cst(&__obj->__v_);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_load(const atomic_bool* __obj)
{
    return atomic_load(const_cast<const volatile atomic_bool*>(__obj));
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_load_explicit(const volatile atomic_bool* __obj, memory_order __o)
{
    switch (__o)
    {
    case memory_order_relaxed:
        return __choose_load_relaxed(&__obj->__v_);
    case memory_order_consume:
        return __choose_load_consume(&__obj->__v_);
    case memory_order_acquire:
        return __choose_load_acquire(&__obj->__v_);
    case memory_order_seq_cst:
        return __choose_load_seq_cst(&__obj->__v_);
    }
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_load_explicit(const atomic_bool* __obj, memory_order __o)
{
    return atomic_load_explicit(const_cast<const volatile atomic_bool*>
                                                                  (__obj), __o);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_exchange(volatile atomic_bool* __obj, bool __desr)
{
    return __choose_exchange_seq_cst(&__obj->__v_, __desr);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_exchange(atomic_bool* __obj, bool __desr)
{
    return atomic_exchange(const_cast<volatile atomic_bool*>(__obj), __desr);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_exchange_explicit(volatile atomic_bool* __obj, bool __desr,
                              memory_order __o)
{
    switch (__o)
    {
    case memory_order_relaxed:
        return __choose_exchange_relaxed(&__obj->__v_, __desr);
    case memory_order_consume:
        return __choose_exchange_consume(&__obj->__v_, __desr);
    case memory_order_acquire:
        return __choose_exchange_acquire(&__obj->__v_, __desr);
    case memory_order_release:
        return __choose_exchange_release(&__obj->__v_, __desr);
    case memory_order_acq_rel:
        return __choose_exchange_acq_rel(&__obj->__v_, __desr);
    case memory_order_seq_cst:
        return __choose_exchange_seq_cst(&__obj->__v_, __desr);
    }
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_exchange_explicit(atomic_bool* __obj, bool __desr, memory_order __o)
{
    return atomic_exchange_explicit(const_cast<volatile atomic_bool*>
                                                          (__obj), __desr, __o);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_compare_exchange_weak(volatile atomic_bool* __obj, bool* __exp,
                                  bool __desr)
{
    return __choose_compare_exchange_weak_seq_cst_seq_cst(&__obj->__v_, __exp,
                                                                        __desr);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_compare_exchange_weak(atomic_bool* __obj, bool* __exp, bool __desr)
{
    return atomic_compare_exchange_weak(const_cast<volatile atomic_bool*>
                                                        (__obj), __exp, __desr);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_compare_exchange_weak_explicit(volatile atomic_bool* __obj,
                                           bool* __exp, bool __desr,
                                           memory_order __s, memory_order __f)
{
    __f = __translate_memory_order(__f);
    switch (__s)
    {
    case memory_order_relaxed:
        return __choose_compare_exchange_weak_relaxed_relaxed(&__obj->__v_,
                                                              __exp, __desr);
    case memory_order_consume:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_weak_consume_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_weak_consume_consume(
                                                   &__obj->__v_, __exp, __desr);
        }
    case memory_order_acquire:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_weak_acquire_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_weak_acquire_consume(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_acquire:
            return __choose_compare_exchange_weak_acquire_acquire(
                                                   &__obj->__v_, __exp, __desr);
        }
    case memory_order_release:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_weak_release_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_weak_release_consume(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_acquire:
            return __choose_compare_exchange_weak_release_acquire(
                                                   &__obj->__v_, __exp, __desr);
        }
    case memory_order_acq_rel:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_weak_acq_rel_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_weak_acq_rel_consume(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_acquire:
            return __choose_compare_exchange_weak_acq_rel_acquire(
                                                   &__obj->__v_, __exp, __desr);
        }
    case memory_order_seq_cst:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_weak_seq_cst_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_weak_seq_cst_consume(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_acquire:
            return __choose_compare_exchange_weak_seq_cst_acquire(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_seq_cst:
            return __choose_compare_exchange_weak_seq_cst_seq_cst(
                                                   &__obj->__v_, __exp, __desr);
        }
    }
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_compare_exchange_weak_explicit(atomic_bool* __obj, bool* __exp,
                                           bool __desr,
                                           memory_order __s, memory_order __f)
{
    return atomic_compare_exchange_weak_explicit(
             const_cast<volatile atomic_bool*>(__obj), __exp, __desr, __s, __f);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_compare_exchange_strong(volatile atomic_bool* __obj, bool* __exp,
                                    bool __desr)
{
    return __choose_compare_exchange_strong_seq_cst_seq_cst(&__obj->__v_, __exp,
                                                                        __desr);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_compare_exchange_strong(atomic_bool* __obj, bool* __exp,
                                    bool __desr)
{
    return atomic_compare_exchange_strong(const_cast<volatile atomic_bool*>
                                                        (__obj), __exp, __desr);
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_compare_exchange_strong_explicit(volatile atomic_bool* __obj,
                                             bool* __exp, bool __desr,
                                             memory_order __s, memory_order __f)
{
    __f = __translate_memory_order(__f);
    switch (__s)
    {
    case memory_order_relaxed:
        return __choose_compare_exchange_strong_relaxed_relaxed(&__obj->__v_,
                                                              __exp, __desr);
    case memory_order_consume:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_strong_consume_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_strong_consume_consume(
                                                   &__obj->__v_, __exp, __desr);
        }
    case memory_order_acquire:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_strong_acquire_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_strong_acquire_consume(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_acquire:
            return __choose_compare_exchange_strong_acquire_acquire(
                                                   &__obj->__v_, __exp, __desr);
        }
    case memory_order_release:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_strong_release_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_strong_release_consume(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_acquire:
            return __choose_compare_exchange_strong_release_acquire(
                                                   &__obj->__v_, __exp, __desr);
        }
    case memory_order_acq_rel:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_strong_acq_rel_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_strong_acq_rel_consume(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_acquire:
            return __choose_compare_exchange_strong_acq_rel_acquire(
                                                   &__obj->__v_, __exp, __desr);
        }
    case memory_order_seq_cst:
        switch (__f)
        {
        case memory_order_relaxed:
            return __choose_compare_exchange_strong_seq_cst_relaxed(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_consume:
            return __choose_compare_exchange_strong_seq_cst_consume(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_acquire:
            return __choose_compare_exchange_strong_seq_cst_acquire(
                                                   &__obj->__v_, __exp, __desr);
        case memory_order_seq_cst:
            return __choose_compare_exchange_strong_seq_cst_seq_cst(
                                                   &__obj->__v_, __exp, __desr);
        }
    }
}

inline _LIBCPP_INLINE_VISIBILITY
bool atomic_compare_exchange_strong_explicit(atomic_bool* __obj, bool* __exp,
                                             bool __desr,
                                             memory_order __s, memory_order __f)
{
    return atomic_compare_exchange_strong_explicit(
             const_cast<volatile atomic_bool*>(__obj), __exp, __desr, __s, __f);
}

_LIBCPP_END_NAMESPACE_STD

#endif  // _LIBCPP_ATOMIC