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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
//
//===----------------------------------------------------------------------===//
// <chrono>
// time_point
// time_point& operator-=(const duration& d);
// constexpr in c++17
#include <chrono>
#include <cassert>
#include "test_macros.h"
#if TEST_STD_VER > 14
constexpr bool constexpr_test()
{
typedef std::chrono::system_clock Clock;
typedef std::chrono::milliseconds Duration;
std::chrono::time_point<Clock, Duration> t(Duration(5));
t -= Duration(4);
return t.time_since_epoch() == Duration(1);
}
#endif
int main(int, char**)
{
{
typedef std::chrono::system_clock Clock;
typedef std::chrono::milliseconds Duration;
std::chrono::time_point<Clock, Duration> t(Duration(3));
t -= Duration(2);
assert(t.time_since_epoch() == Duration(1));
}
#if TEST_STD_VER > 14
static_assert(constexpr_test(), "");
#endif
return 0;
}
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