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[thirdparty/gcc.git] / libstdc++-v3 / testsuite / 20_util / time_point / comparison_operators / three_way.cc
1 // { dg-options "-std=gnu++2a" }
2 // { dg-do run { target c++2a } }
3
4 // Copyright (C) 2020-2021 Free Software Foundation, Inc.
5 //
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
10 // any later version.
11
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
16
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3. If not see
19 // <http://www.gnu.org/licenses/>.
20
21 #include <chrono>
22 #include <testsuite_hooks.h>
23
24 // C++20 27.6.6 Comparisons [time.point.comparisons]
25
26 void
27 test01()
28 {
29 using namespace std::chrono;
30
31 auto ns = system_clock::now();
32 auto s = time_point_cast<seconds>(ns + seconds(2));
33
34 VERIFY( s != ns );
35 VERIFY( std::is_lt(ns <=> s) );
36 }
37
38 int main()
39 {
40 test01();
41 }