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std::chrono...one::to_sys(3) C++ Standard Libary std::chrono...one::to_sys(3) NAME std::chrono::time_zone::to_sys - std::chrono::time_zone::to_sys Synopsis template< class Duration > auto to_sys( const std::chrono::local_time<Duration>& tp ) const (1) (since C++20) -> std::chrono::sys_time<std::common_type_t<Duration, std::chrono::seconds>>; template< class Duration > auto to_sys( const std::chrono::local_time<Duration>& tp, (since std::chrono::choose z ) const (2) C++20) -> std::chrono::sys_time<std::common_type_t<Duration, std::chrono::seconds>>; Converts the local_time tp in this time zone to the corresponding sys_time. 1) Throws an exception if the conversion is ambiguous or if tp rep- resents a nonexistent time. 2) Resolves ambiguity according to the value of z: * If z == std::chrono::choose::earliest, returns the earlier sys_time. * If z == std::chrono::choose::latest, returns the later sys_time. If tp represents a nonexistent time between two UTC time_points, those two time_points will be the same, and that time_point will be returned. Return value The UTC equivalent of tp according to the rules of this time zone. Exceptions 1) Throws: * std::chrono::ambiguous_local_time if the conversion is ambigu- ous, * std::chrono::nonexistent_local_time if tp represents a nonexis- tent time. Notes The precision of the result is at least std::chrono::seconds, and will be finer if the argument has finer precision. Ambiguous and nonexistent local times can occur as a result of time zone transitions (such as daylight saving time). For example, "2016-03-13 02:30:00" does not exist in the "America/New_York" time zone, while "2016-11-06 01:30:00" in that time zone can correspond to two UTC time points: 2016-11-06 05:30:00 UTC and 2016-11-06 06:30:00 UTC. Example This section is incomplete Reason: no example Category: * Todo no example http://cppreference.com 2024.06.10 std::chrono...one::to_sys(3)
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