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std::chrono::utc_clock(3) C++ Standard Libary std::chrono::utc_clock(3) NAME std::chrono::utc_clock - std::chrono::utc_clock Synopsis Defined in header <chrono> class utc_clock; (since C++20) The clock std::chrono::utc_clock is a Clock that represents Coordi- nated Universal Time (UTC). It measures time since 00:00:00 UTC, Thursday, 1 January 1970, including leap seconds. utc_clock meets the Clock requirements. It does not meet the Triv- ialClock requirements unless the implementation can guarantee that now() does not throw an exception. Member types Member type Definition rep signed arithmetic type representing the number of ticks in the clock's duration period a std::ratio type representing the tick period of the clock, in seconds duration std::chrono::duration<rep, period>, capable of repre- senting negative durations time_point std::chrono::time_point<std::chrono::utc_clock> Member constants true if the time between ticks is always constant, i.e. constexpr bool is_steady calls to now() return values that increase monotonically [static] even in case of some external clock adjust- ment, otherwise false (public static member constant) Member functions now returns a std::chrono::time_point representing the current point in time [static] (public static member function) to_sys converts utc_time to sys_time [static] (public static member function) from_sys converts sys_time to utc_time [static] (public static member function) Non-member functions get_leap_second_info obtains leap second insertion information from a utc_time (C++20) object (function template) Helper classes leap_second_info leap second insertion information (C++20) (class) Notes The official UTC epoch is 1 January 1972. utc_clock uses 1 January 1970 instead to be consistent with std::chrono::system_clock. http://cppreference.com 2024.06.10 std::chrono::utc_clock(3)
NAME | Synopsis | Member types | Member constants | Member functions | Non-member functions | Helper classes | Notes
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