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 20 int 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
