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 #include "test_macros.h" 21 22 int main() 23 { 24 typedef std::chrono::system_clock Clock; 25 typedef std::chrono::microseconds Duration1; 26 typedef std::chrono::milliseconds Duration2; 27 { 28 std::chrono::time_point<Clock, Duration2> t2(Duration2(3)); 29 std::chrono::time_point<Clock, Duration1> t1 = t2; 30 assert(t1.time_since_epoch() == Duration1(3000)); 31 } 32 #if TEST_STD_VER > 11 33 { 34 constexpr std::chrono::time_point<Clock, Duration2> t2(Duration2(3)); 35 constexpr std::chrono::time_point<Clock, Duration1> t1 = t2; 36 static_assert(t1.time_since_epoch() == Duration1(3000), ""); 37 } 38 #endif 39 } 40
