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a945c346 | 1 | // Copyright (C) 2020-2024 Free Software Foundation, Inc. |
fd335985 PP |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
bb2dd761 | 18 | // { dg-do compile { target c++20 } } |
fd335985 PP |
19 | |
20 | #include <functional> | |
21 | #include <numeric> | |
22 | ||
23 | constexpr bool | |
24 | test01() | |
25 | { | |
26 | int x[5] = {1,2,3,4,5}; | |
27 | int y[5]; | |
28 | std::adjacent_difference(x, x+5, y); | |
29 | return y[0] == 1 && y[1] == 1 && y[2] == 1 && y[3] == 1 && y[4] == 1; | |
30 | } | |
31 | ||
32 | static_assert(test01()); | |
33 | ||
34 | constexpr bool | |
35 | test02() | |
36 | { | |
37 | int x[5] = {1,2,3,4,5}; | |
38 | int y[5]; | |
39 | std::adjacent_difference(x, x+5, y, std::multiplies{}); | |
40 | return y[0] == 1 && y[1] == 2 && y[2] == 6 && y[3] == 12 && y[4] == 20; | |
41 | } | |
42 | ||
43 | static_assert(test02()); |