1 //===----------------------------------------------------------------------===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is dual licensed under the MIT and the University of Illinois Open 6 // Source Licenses. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 // <chrono> 11 12 // time_point 13 14 // template <class Clock, class Duration1, class Rep2, class Period2> 15 // time_point<Clock, typename common_type<Duration1, duration<Rep2, Period2>>::type> 16 // operator+(const time_point<Clock, Duration1>& lhs, const duration<Rep2, Period2>& rhs); 17 18 // template <class Rep1, class Period1, class Clock, class Duration2> 19 // time_point<Clock, typename common_type<duration<Rep1, Period1>, Duration2>::type> 20 // operator+(const duration<Rep1, Period1>& lhs, const time_point<Clock, Duration2>& rhs); 21 22 #include <chrono> 23 #include <cassert> 24 25 int main() 26 { 27 typedef std::chrono::system_clock Clock; 28 typedef std::chrono::milliseconds Duration1; 29 typedef std::chrono::microseconds Duration2; 30 { 31 std::chrono::time_point<Clock, Duration1> t1(Duration1(3)); 32 std::chrono::time_point<Clock, Duration2> t2 = t1 + Duration2(5); 33 assert(t2.time_since_epoch() == Duration2(3005)); 34 t2 = Duration2(6) + t1; 35 assert(t2.time_since_epoch() == Duration2(3006)); 36 } 37 #if _LIBCPP_STD_VER > 11 38 { 39 constexpr std::chrono::time_point<Clock, Duration1> t1(Duration1(3)); 40 constexpr std::chrono::time_point<Clock, Duration2> t2 = t1 + Duration2(5); 41 static_assert(t2.time_since_epoch() == Duration2(3005), ""); 42 constexpr std::chrono::time_point<Clock, Duration2> t3 = Duration2(6) + t1; 43 static_assert(t3.time_since_epoch() == Duration2(3006), ""); 44 } 45 #endif 46 } 47
