| // Copyright (C) 2020-2021 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 <functional> |
| #include <numeric> |
| |
| constexpr bool |
| test01() |
| { |
| int x[5] = {1,2,3,4,5}; |
| int y[5]; |
| std::adjacent_difference(x, x+5, y); |
| return y[0] == 1 && y[1] == 1 && y[2] == 1 && y[3] == 1 && y[4] == 1; |
| } |
| |
| static_assert(test01()); |
| |
| constexpr bool |
| test02() |
| { |
| int x[5] = {1,2,3,4,5}; |
| int y[5]; |
| std::adjacent_difference(x, x+5, y, std::multiplies{}); |
| return y[0] == 1 && y[1] == 2 && y[2] == 6 && y[3] == 12 && y[4] == 20; |
| } |
| |
| static_assert(test02()); |
