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// 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++17" }
// { dg-do compile { target c++17 } }
#include <chrono>
#if __cpp_lib_chrono < 201510
# error "__cpp_lib_chrono < 201510"
#endif
using namespace std::chrono_literals;
using std::chrono::seconds;
using fp_seconds = std::chrono::duration<float>;
static_assert( std::chrono::floor<seconds>(1000ms) == 1s );
static_assert( std::chrono::floor<seconds>(1001ms) == 1s );
static_assert( std::chrono::floor<seconds>(1500ms) == 1s );
static_assert( std::chrono::floor<seconds>(1999ms) == 1s );
static_assert( std::chrono::floor<seconds>(2000ms) == 2s );
static_assert( std::chrono::floor<seconds>(2001ms) == 2s );
static_assert( std::chrono::floor<seconds>(2500ms) == 2s );
static_assert( std::chrono::floor<fp_seconds>(500ms) == fp_seconds{0.5f} );
static_assert( std::chrono::ceil<seconds>(1000ms) == 1s );
static_assert( std::chrono::ceil<seconds>(1001ms) == 2s );
static_assert( std::chrono::ceil<seconds>(1500ms) == 2s );
static_assert( std::chrono::ceil<seconds>(1999ms) == 2s );
static_assert( std::chrono::ceil<seconds>(2000ms) == 2s );
static_assert( std::chrono::ceil<seconds>(2001ms) == 3s );
static_assert( std::chrono::ceil<seconds>(2500ms) == 3s );
static_assert( std::chrono::ceil<fp_seconds>(500ms) == fp_seconds{0.5f} );
static_assert( std::chrono::round<seconds>(1000ms) == 1s );
static_assert( std::chrono::round<seconds>(1001ms) == 1s );
static_assert( std::chrono::round<seconds>(1499ms) == 1s );
static_assert( std::chrono::round<seconds>(1500ms) == 2s );
static_assert( std::chrono::round<seconds>(1999ms) == 2s );
static_assert( std::chrono::round<seconds>(2000ms) == 2s );
static_assert( std::chrono::round<seconds>(2001ms) == 2s );
static_assert( std::chrono::round<seconds>(2500ms) == 2s );
static_assert( std::chrono::round<seconds>(2501ms) == 3s );
static_assert( std::chrono::abs(100ms) == 100ms );
static_assert( std::chrono::abs(-100ms) == 100ms );
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