| //===----------------------------------------------------------------------===// |
| // |
| // 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<Iterator Iter1, Iterator Iter2> |
| // requires HasSwap<Iter1::reference, Iter2::reference> |
| // void |
| // iter_swap(Iter1 a, Iter2 b); |
| |
| #include <algorithm> |
| #include <cassert> |
| |
| #include "test_macros.h" |
| |
| #if TEST_STD_VER > 17 |
| constexpr bool test_swap_constexpr() |
| { |
| int i = 1; |
| int j = 2; |
| std::iter_swap(&i, &j); |
| return i == 2 && j == 1; |
| } |
| #endif // TEST_STD_VER > 17 |
| |
| int main(int, char**) |
| { |
| int i = 1; |
| int j = 2; |
| std::iter_swap(&i, &j); |
| assert(i == 2); |
| assert(j == 1); |
| |
| #if TEST_STD_VER > 17 |
| static_assert(test_swap_constexpr()); |
| #endif // TEST_STD_VER > 17 |
| |
| return 0; |
| } |