std::chrono::file_clock::to_sys,std::chrono::file_clock::from_sys (3) - Linux Manuals

std::chrono::file_clock::to_sys,std::chrono::file_clock::from_sys: std::chrono::file_clock::to_sys,std::chrono::file_clock::from_sys

NAME

std::chrono::file_clock::to_sys,std::chrono::file_clock::from_sys - std::chrono::file_clock::to_sys,std::chrono::file_clock::from_sys

Synopsis

template <class Duration> (since C++20)
static std::chrono::sys_time</*see below*/> (1) (optional)
to_sys(const std::chrono::file_time<Duration>& t);
template <class Duration> (since C++20)
static std::chrono::file_time</*see below*/> (2) (optional)
from_sys(const std::chrono::sys_time<Duration>& t);

1) Converts the file_time t to a sys_time representing the same point in time.
2) Converts the sys_time t to a file_time representing the same point in time.
The duration of the return type is computed from Duration in an unspecified manner.
These function templates are optional: an implementation may choose to instead provide to_utc and from_utc.

Return value

1) A sys_time representing the same point in time as the argument.
2) A file_time representing the same point in time as the argument.

Notes

User code should usually use std::chrono::clock_cast, which provides a generic interface to convert time points between clocks, rather than call these functions directly.