@node fabs
@section @code{fabs}
@findex fabs

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

Gnulib module: fabs

Portability problems fixed by Gnulib:
@itemize
@end itemize

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