111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert//===----------------------------------------------------------------------===// 211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// 311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// The LLVM Compiler Infrastructure 411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// 511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// This file is dual licensed under the MIT and the University of Illinois Open 611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// Source Licenses. See LICENSE.TXT for details. 711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// 811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert//===----------------------------------------------------------------------===// 911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 1011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// <chrono> 1111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 1211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// time_point 1311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 1411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// template <class ToDuration, class Clock, class Duration> 1511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// time_point<Clock, ToDuration> 1611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert// time_point_cast(const time_point<Clock, Duration>& t); 1711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 1811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <chrono> 1911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <type_traits> 2011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#include <cassert> 2111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 2211cd02dfb91661c65134cac258cf5924270e9d2Dan Alberttemplate <class FromDuration, class ToDuration> 2311cd02dfb91661c65134cac258cf5924270e9d2Dan Albertvoid 2411cd02dfb91661c65134cac258cf5924270e9d2Dan Alberttest(const FromDuration& df, const ToDuration& d) 2511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert{ 2611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef std::chrono::system_clock Clock; 2711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint; 2811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint; 2911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 3011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert FromTimePoint f(df); 3111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert ToTimePoint t(d); 3211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef decltype(std::chrono::time_point_cast<ToDuration>(f)) R; 3311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert static_assert((std::is_same<R, ToTimePoint>::value), ""); 3411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert assert(std::chrono::time_point_cast<ToDuration>(f) == t); 3511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 3611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert} 3711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 3811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _LIBCPP_STD_VER > 11 3911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 4011cd02dfb91661c65134cac258cf5924270e9d2Dan Alberttemplate<class FromDuration, long long From, class ToDuration, long long To> 4111cd02dfb91661c65134cac258cf5924270e9d2Dan Albertvoid test_constexpr () 4211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert{ 4311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef std::chrono::system_clock Clock; 4411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint; 4511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint; 4611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 4711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert constexpr FromTimePoint f{FromDuration{From}}; 4811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert constexpr ToTimePoint t{ToDuration{To}}; 4911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert static_assert(std::chrono::time_point_cast<ToDuration>(f) == t, ""); 5011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 5111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 5211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert} 5311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 5411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 5511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert 5611cd02dfb91661c65134cac258cf5924270e9d2Dan Albertint main() 5711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert{ 5811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test(std::chrono::milliseconds(7265000), std::chrono::hours(2)); 5911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test(std::chrono::milliseconds(7265000), std::chrono::minutes(121)); 6011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test(std::chrono::milliseconds(7265000), std::chrono::seconds(7265)); 6111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test(std::chrono::milliseconds(7265000), std::chrono::milliseconds(7265000)); 6211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test(std::chrono::milliseconds(7265000), std::chrono::microseconds(7265000000LL)); 6311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test(std::chrono::milliseconds(7265000), std::chrono::nanoseconds(7265000000000LL)); 6411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test(std::chrono::milliseconds(7265000), 6511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert std::chrono::duration<double, std::ratio<3600> >(7265./3600)); 6611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test(std::chrono::duration<int, std::ratio<2, 3> >(9), 6711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert std::chrono::duration<int, std::ratio<3, 5> >(10)); 6811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#if _LIBCPP_STD_VER > 11 6911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert { 7011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::hours, 2> (); 7111cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::minutes,121> (); 7211cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::seconds,7265> (); 7311cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::milliseconds,7265000> (); 7411cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::microseconds,7265000000LL> (); 7511cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::nanoseconds,7265000000000LL> (); 7611cd02dfb91661c65134cac258cf5924270e9d2Dan Albert typedef std::chrono::duration<int, std::ratio<3, 5>> T1; 7711cd02dfb91661c65134cac258cf5924270e9d2Dan Albert test_constexpr<std::chrono::duration<int, std::ratio<2, 3>>, 9, T1, 10> (); 7811cd02dfb91661c65134cac258cf5924270e9d2Dan Albert } 7911cd02dfb91661c65134cac258cf5924270e9d2Dan Albert#endif 8011cd02dfb91661c65134cac258cf5924270e9d2Dan Albert} 81