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 #include <chrono> 19 #include <cassert> 20 21 int main() 22 { 23 typedef std::chrono::system_clock Clock; 24 typedef std::chrono::milliseconds Duration1; 25 typedef std::chrono::microseconds Duration2; 26 std::chrono::time_point<Clock, Duration1> t1(Duration1(3)); 27 std::chrono::time_point<Clock, Duration2> t2 = t1 - Duration2(5); 28 assert(t2.time_since_epoch() == Duration2(2995)); 29 } 30
