48 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9// <chrono>10 11// time_point12 13// time_point& operator+=(const duration& d);14// constexpr in c++1715 16#include <chrono>17#include <cassert>18 19#include "test_macros.h"20 21#if TEST_STD_VER > 1422constexpr bool constexpr_test()23{24 typedef std::chrono::system_clock Clock;25 typedef std::chrono::milliseconds Duration;26 std::chrono::time_point<Clock, Duration> t(Duration(5));27 t += Duration(4);28 return t.time_since_epoch() == Duration(9);29}30#endif31 32int main(int, char**)33{34 {35 typedef std::chrono::system_clock Clock;36 typedef std::chrono::milliseconds Duration;37 std::chrono::time_point<Clock, Duration> t(Duration(3));38 t += Duration(2);39 assert(t.time_since_epoch() == Duration(5));40 }41 42#if TEST_STD_VER > 1443 static_assert(constexpr_test(), "");44#endif45 46 return 0;47}48