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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14
// <chrono>
// abs
// template <class Rep, class Period>
// constexpr duration<Rep, Period> abs(duration<Rep, Period> d)
#include <chrono>
#include <type_traits>
#include <cassert>
#include "test_macros.h"
template <class Duration>
void
test(const Duration& f, const Duration& d)
{
{
typedef decltype(std::chrono::abs(f)) R;
static_assert((std::is_same<R, Duration>::value), "");
assert(std::chrono::abs(f) == d);
}
}
int main(int, char**)
{
// 7290000ms is 2 hours, 1 minute, and 30 seconds
test(std::chrono::milliseconds( 7290000), std::chrono::milliseconds( 7290000));
test(std::chrono::milliseconds(-7290000), std::chrono::milliseconds( 7290000));
test(std::chrono::minutes( 122), std::chrono::minutes( 122));
test(std::chrono::minutes(-122), std::chrono::minutes( 122));
test(std::chrono::hours(0), std::chrono::hours(0));
{
// 9000000ms is 2 hours and 30 minutes
constexpr std::chrono::hours h1 = std::chrono::abs(std::chrono::hours(-3));
static_assert(h1.count() == 3, "");
constexpr std::chrono::hours h2 = std::chrono::abs(std::chrono::hours(3));
static_assert(h2.count() == 3, "");
}
{
// Make sure it works for durations that are not LCD'ed - example from LWG3091
constexpr auto d = std::chrono::abs(std::chrono::duration<int, std::ratio<60, 100>>{2});
static_assert(d.count() == 2, "");
}
return 0;
}
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