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10.1074 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.