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83ffe9cd | 1 | // Copyright (C) 2020-2023 Free Software Foundation, Inc. |
16948c54 JW |
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 | ||
18 | // { dg-options "-std=gnu++2a" } | |
19 | // { dg-do run { target c++2a } } | |
20 | ||
21 | #include <chrono> | |
22 | #include <testsuite_hooks.h> | |
23 | ||
24 | void | |
25 | test01() | |
26 | { | |
27 | auto sys_now = std::chrono::system_clock::now(); | |
28 | auto file_now = std::chrono::file_clock::now(); | |
29 | auto d1 = std::chrono::file_clock::to_sys(file_now) - sys_now; | |
30 | VERIFY( d1 < std::chrono::seconds(1) ); | |
31 | auto d2 = file_now - std::chrono::file_clock::from_sys(sys_now); | |
32 | VERIFY( d2 == d1 ); | |
33 | } | |
34 | ||
9fc61d45 JW |
35 | void |
36 | test02() | |
37 | { | |
38 | using namespace std::chrono; | |
39 | ||
40 | file_time<file_clock::duration> t = file_clock::now(); | |
41 | file_time<seconds> s = floor<seconds>(t); | |
42 | VERIFY( t - s < 1s ); | |
43 | } | |
44 | ||
16948c54 JW |
45 | int |
46 | main() | |
47 | { | |
48 | test01(); | |
9fc61d45 | 49 | test02(); |
16948c54 | 50 | } |