| //===----------------------------------------------------------------------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is dual licensed under the MIT and the University of Illinois Open |
| // Source Licenses. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <chrono> |
| |
| // time_point |
| |
| // template <class ToDuration, class Clock, class Duration> |
| // time_point<Clock, ToDuration> |
| // time_point_cast(const time_point<Clock, Duration>& t); |
| |
| #include <chrono> |
| #include <type_traits> |
| #include <cassert> |
| |
| template <class FromDuration, class ToDuration> |
| void |
| test(const FromDuration& df, const ToDuration& d) |
| { |
| typedef std::chrono::system_clock Clock; |
| typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint; |
| typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint; |
| { |
| FromTimePoint f(df); |
| ToTimePoint t(d); |
| typedef decltype(std::chrono::time_point_cast<ToDuration>(f)) R; |
| static_assert((std::is_same<R, ToTimePoint>::value), ""); |
| assert(std::chrono::time_point_cast<ToDuration>(f) == t); |
| } |
| } |
| |
| #if _LIBCPP_STD_VER > 11 |
| |
| template<class FromDuration, long long From, class ToDuration, long long To> |
| void test_constexpr () |
| { |
| typedef std::chrono::system_clock Clock; |
| typedef std::chrono::time_point<Clock, FromDuration> FromTimePoint; |
| typedef std::chrono::time_point<Clock, ToDuration> ToTimePoint; |
| { |
| constexpr FromTimePoint f{FromDuration{From}}; |
| constexpr ToTimePoint t{ToDuration{To}}; |
| static_assert(std::chrono::time_point_cast<ToDuration>(f) == t, ""); |
| } |
| |
| } |
| |
| #endif |
| |
| int main() |
| { |
| test(std::chrono::milliseconds(7265000), std::chrono::hours(2)); |
| test(std::chrono::milliseconds(7265000), std::chrono::minutes(121)); |
| test(std::chrono::milliseconds(7265000), std::chrono::seconds(7265)); |
| test(std::chrono::milliseconds(7265000), std::chrono::milliseconds(7265000)); |
| test(std::chrono::milliseconds(7265000), std::chrono::microseconds(7265000000LL)); |
| test(std::chrono::milliseconds(7265000), std::chrono::nanoseconds(7265000000000LL)); |
| test(std::chrono::milliseconds(7265000), |
| std::chrono::duration<double, std::ratio<3600> >(7265./3600)); |
| test(std::chrono::duration<int, std::ratio<2, 3> >(9), |
| std::chrono::duration<int, std::ratio<3, 5> >(10)); |
| #if _LIBCPP_STD_VER > 11 |
| { |
| test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::hours, 2> (); |
| test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::minutes,121> (); |
| test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::seconds,7265> (); |
| test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::milliseconds,7265000> (); |
| test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::microseconds,7265000000LL> (); |
| test_constexpr<std::chrono::milliseconds, 7265000, std::chrono::nanoseconds,7265000000000LL> (); |
| typedef std::chrono::duration<int, std::ratio<3, 5>> T1; |
| test_constexpr<std::chrono::duration<int, std::ratio<2, 3>>, 9, T1, 10> (); |
| } |
| #endif |
| } |