On Windows, if *secs* is zero, the thread relinquishes the remainder of its

time slice to any other thread that is ready to run. If there are no other

threads ready to run, the function returns immediately, and the thread

continues execution. On Windows8.1 and newer the implementation uses

continues execution. On Windows10 and newer the implementation uses

a `high-resolution timer

<https://learn.microsoft.com/windows-hardware/drivers/kernel/high-resolution-timers>`_

<https://learn.microsoft.com/windows/win32/api/synchapi/nf-synchapi-createwaitabletimerexw>`_

which provides resolution of 100 nanoseconds. If *secs* is zero, ``Sleep(0)`` is used.

..rubric::Unix implementation