libstdc++-v3/testsuite/20_util/duration_cast/rounding_c++11.cc

// Copyright (C) 2016-2021 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/>.

// { dg-options "-std=gnu++11" }
// { dg-do compile { target c++11 } }

#include <chrono>

using std::chrono::seconds;
using std::chrono::milliseconds;

using fp_seconds = std::chrono::duration<float>;

static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(1000))
	       == seconds(1) );
static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(1001))
	       == seconds(2) );
static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(1500))
	       == seconds(2) );
static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(1999))
	       == seconds(2) );
static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(2000))
	       == seconds(2) );
static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(2001))
	       == seconds(3) );
static_assert( std::chrono::__detail::ceil<seconds>(milliseconds(2500))
	       == seconds(3) );
static_assert( std::chrono::__detail::ceil<fp_seconds>(milliseconds(500))
	       == fp_seconds{0.5f} );