op_-duration.pass.cpp revision bc8d3f97eb5c958007f2713238472e0c1c8fe02c
1//===----------------------------------------------------------------------===// 2// 3// ��������������������The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. 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 21int 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