std::chrono:: local_info

Defined in header <chrono>
struct local_info ;		(since C++20)

The class local_info describes the result of converting a std::chrono::local_time to a std::chrono::sys_time .

• If the result of the conversion is unique, then result == local_info :: unique , first is filled out with the correct std::chrono::sys_info , and second is zero-initialized.
• If the local_time is nonexistent, then result == local_info :: nonexistent , first is filled out with the std::chrono::sys_info that ends just prior to the local_time , and second is filled out with the std::chrono::sys_info that begins just after the local_time .
• If the local_time is ambiguous, then result == local_info :: ambiguous , first is filled out with the std::chrono::sys_info that ends just after the local_time , and second is filled with the std::chrono::sys_info that starts just before the local_time .

This is a low-level data structure; typical conversions from local_time to sys_time will use it implicitly rather than explicitly.

Member constants

Name	Value
constexpr int unique [static]	​ 0 ​ (public static member constant)
constexpr int nonexistent [static]	1 (public static member constant)
constexpr int ambiguous [static]	2 (public static member constant)

Member objects

Member object	Type
result	int
first , second	std::chrono::sys_info

Nonmember functions

operator<< (C++20)

outputs a local_info into a stream (function template)

Helper classes

std::formatter <std::chrono::local_info> (C++20)

formatting support for local_info (class template specialization)