50 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// template <class Clock, class Duration1, class Rep2, class Period2>14// time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type>15// operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs);16 17// template <class Rep1, class Period1, class Clock, class Duration2>18// time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type>19// operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs);20 21#include <chrono>22#include <cassert>23 24#include "test_macros.h"25 26int main(int, char**)27{28 typedef std::chrono::system_clock Clock;29 typedef std::chrono::milliseconds Duration1;30 typedef std::chrono::microseconds Duration2;31 {32 std::chrono::time_point<Clock, Duration1> t1(Duration1(3));33 std::chrono::time_point<Clock, Duration2> t2 = t1 + Duration2(5);34 assert(t2.time_since_epoch() == Duration2(3005));35 t2 = Duration2(6) + t1;36 assert(t2.time_since_epoch() == Duration2(3006));37 }38#if TEST_STD_VER > 1139 {40 constexpr std::chrono::time_point<Clock, Duration1> t1(Duration1(3));41 constexpr std::chrono::time_point<Clock, Duration2> t2 = t1 + Duration2(5);42 static_assert(t2.time_since_epoch() == Duration2(3005), "");43 constexpr std::chrono::time_point<Clock, Duration2> t3 = Duration2(6) + t1;44 static_assert(t3.time_since_epoch() == Duration2(3006), "");45 }46#endif47 48 return 0;49}50