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 Duration2> 15// time_point(const time_point<clock, Duration2>& t); 16 17#include <chrono> 18#include <cassert> 19 20int main() 21{ 22 typedef std::chrono::system_clock Clock; 23 typedef std::chrono::microseconds Duration1; 24 typedef std::chrono::milliseconds Duration2; 25 { 26 std::chrono::time_point<Clock, Duration2> t2(Duration2(3)); 27 std::chrono::time_point<Clock, Duration1> t1 = t2; 28 assert(t1.time_since_epoch() == Duration1(3000)); 29 } 30#if _LIBCPP_STD_VER > 11 31 { 32 constexpr std::chrono::time_point<Clock, Duration2> t2(Duration2(3)); 33 constexpr std::chrono::time_point<Clock, Duration1> t1 = t2; 34 static_assert(t1.time_since_epoch() == Duration1(3000), ""); 35 } 36#endif 37} 38