@node difftime
@section @code{difftime}
@findex difftime

POSIX specification:@* @url{https://pubs.opengroup.org/onlinepubs/9699919799/functions/difftime.html}

Gnulib module: ---

Portability problems fixed by Gnulib:
@itemize
@end itemize

Portability problems not fixed by Gnulib:
@itemize
@end itemize