| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <algorithm> |
| |
| // template<ForwardIterator Iter, Predicate<auto, Iter::value_type> Pred, class T> |
| // requires OutputIterator<Iter, Iter::reference> |
| // && OutputIterator<Iter, const T&> |
| // && CopyConstructible<Pred> |
| // constexpr void // constexpr after C++17 |
| // replace_if(Iter first, Iter last, Pred pred, const T& new_value); |
| |
| #include <algorithm> |
| #include <functional> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| #include "test_iterators.h" |
| |
| TEST_CONSTEXPR bool equalToTwo(int v) { return v == 2; } |
| |
| #if TEST_STD_VER > 17 |
| TEST_CONSTEXPR bool test_constexpr() { |
| int ia[] = {0, 1, 2, 3, 4}; |
| const int expected[] = {0, 1, 5, 3, 4}; |
| |
| std::replace_if(std::begin(ia), std::end(ia), equalToTwo, 5); |
| return std::equal(std::begin(ia), std::end(ia), std::begin(expected), std::end(expected)) |
| ; |
| } |
| #endif |
| |
| |
| template <class Iter> |
| void |
| test() |
| { |
| int ia[] = {0, 1, 2, 3, 4}; |
| const unsigned sa = sizeof(ia)/sizeof(ia[0]); |
| std::replace_if(Iter(ia), Iter(ia+sa), equalToTwo, 5); |
| assert(ia[0] == 0); |
| assert(ia[1] == 1); |
| assert(ia[2] == 5); |
| assert(ia[3] == 3); |
| assert(ia[4] == 4); |
| } |
| |
| int main(int, char**) |
| { |
| test<forward_iterator<int*> >(); |
| test<bidirectional_iterator<int*> >(); |
| test<random_access_iterator<int*> >(); |
| test<int*>(); |
| |
| #if TEST_STD_VER > 17 |
| static_assert(test_constexpr()); |
| #endif |
| |
| return 0; |
| } |