libstdc++-v3/testsuite/20_util/duration/comparison_operators/three_way.cc

// { dg-options "-std=gnu++2a" }
// { dg-do run { target c++2a } }

// 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/>.

// 20.8.3 Class template duration [time.duration]

#include <chrono>
#include <testsuite_hooks.h>

// C++20 27.5.6 Comparisons [time.duration.comparisons]

void
test01()
{
  using namespace std::chrono;

  duration<int> d0(12);
  duration<int> d1(3);
  duration<long> d2(3);

  VERIFY(d1 < d0);
  VERIFY(d0 > d1);
  VERIFY( std::is_lt(d1 <=> d0) );
  VERIFY( std::is_gt(d0 <=> d1) );

  VERIFY(d0 != d1);
  VERIFY(d1 == d2);
  VERIFY( std::is_neq(d0 <=> d1) );
  VERIFY( std::is_eq(d1 <=> d2) );

  VERIFY(d1 <= d2);
  VERIFY(d1 >= d2);
  VERIFY( std::is_lteq(d1 <=> d2) );
  VERIFY( std::is_gteq(d1 <=> d2) );

  VERIFY(d1 <= d0);
  VERIFY(d0 >= d1);
  VERIFY( std::is_lteq(d1 <=> d0) );
  VERIFY( std::is_gteq(d0 <=> d1) );
}

int
main()
{
  test01();
}