std::chrono:: clock_cast

Defined in header <chrono>
template < class Dest, class Source, class Duration > auto clock_cast ( const std:: chrono :: time_point < Source, Duration > & t ) ;		(since C++20)

Converts the time point t of a clock Source to an equivalent time point of the clock Dest , using std::chrono::system_clock and/or std::chrono::utc_clock as intermediaries if necessary.

• If the expression std:: chrono :: clock_time_conversion < Dest, Source > { } ( t ) is well-formed, returns the result of that expression.
• Otherwise, if at least one of the following two expressions are well-formed, then

• If both expressions are well-formed, the conversion is ambiguous, and the program is ill-formed.
• Otherwise, exactly one of the two expressions is well-formed; the result of that expression is returned.

• Otherwise, if at least one of the following two expressions are well-formed, then

• If both expressions are well-formed, the conversion is ambiguous, and the program is ill-formed.
• Otherwise, exactly one of the two expressions is well-formed; the result of that expression is returned.

• Otherwise, this function does not participate in overload resolution.

Return value

The result of the conversion, determined as described above.

Example

This section is incomplete Reason: no example

See also

clock_time_conversion (C++20)

traits class defining how to convert time points of one clock to another (class template)