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1 // { dg-do compile { target c++20 } }
2
3 // Copyright (C) 2020-2024 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
9 // any later version.
10
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING3. If not see
18 // <http://www.gnu.org/licenses/>.
19
20 // 20.8.4 Class template time_point [time.point]
21
22 #include <chrono>
23
24 constexpr bool
25 test_time_point_increment_ops()
26 {
27 using namespace std::chrono;
28 bool ok = true;
29 time_point<local_t, seconds> tp(seconds(1));
30
31 ok &= tp.time_since_epoch() == 1s;
32 ok &= (tp++).time_since_epoch() == 1s;
33 ok &= tp.time_since_epoch() == 2s;
34 ok &= (++tp).time_since_epoch() == 3s;
35 ok &= (tp--).time_since_epoch() == 3s;
36 ok &= tp.time_since_epoch() == 2s;
37 ok &= (--tp).time_since_epoch() == 1s;
38 ok &= tp.time_since_epoch() == 1s;
39 return ok;
40 }
41 static_assert(test_time_point_increment_ops());