sleep
=====

POSIX specification:
 https://pubs.opengroup.org/onlinepubs/9699919799/functions/sleep.html

Gnulib module: sleep

Portability problems fixed by Gnulib:

  * This function is missing on some platforms: mingw (2005 or newer), MSVC 14.

  * This function takes milliseconds as argument and returns void on some platforms: mingw (2005 and older).

  * This function cannot sleep longer than 49.7 days on some platforms: Cygwin 1.5.x.

Portability problems not fixed by Gnulib:

  * According to POSIX, the sleep function may interfere with the program's use of the SIGALRM signal.  On Linux, it doesn't; on other platforms, it may.