| /* |
| * Copyright 2017-2022 The OpenSSL Project Authors. All Rights Reserved. |
| * Copyright 2016 Cryptography Research, Inc. |
| * |
| * Licensed under the Apache License 2.0 (the "License"). You may not use |
| * this file except in compliance with the License. You can obtain a copy |
| * in the file LICENSE in the source distribution or at |
| * https://www.openssl.org/source/license.html |
| * |
| * Originally written by Mike Hamburg |
| */ |
| |
| #ifndef OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H |
| # define OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H |
| |
| # include "internal/constant_time.h" |
| |
| # define ARCH_WORD_BITS 64 |
| |
| # define word_is_zero(a) constant_time_is_zero_64(a) |
| |
| static ossl_inline uint128_t widemul(uint64_t a, uint64_t b) |
| { |
| return ((uint128_t) a) * b; |
| } |
| |
| #endif /* OSSL_CRYPTO_EC_CURVE448_ARCH_64_INTRINSICS_H */ |