| // Copyright (C) 2019-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| // { dg-options "-std=gnu++2a" } |
| // { dg-do compile { target c++2a } } |
| |
| #include <algorithm> |
| |
| constexpr bool |
| test() |
| { |
| auto ok = true; |
| |
| double asc = 3.1415; |
| double bsc = 2.7182; |
| std::swap(asc, bsc); |
| ok = ok && asc == 2.7182 && bsc == 3.1415; |
| |
| float arr[5]{0.0f, 1.0f, 2.0f, 3.0f, 4.0f}; |
| float brr[5]{5.0f, 6.0f, 7.0f, 8.0f, 9.0f}; |
| std::swap(arr, brr); |
| ok = ok && arr[2] == 7.0f && brr[2] == 2.0f; |
| |
| return ok; |
| } |
| |
| static_assert(test()); |
