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

POSIX specification:@* @url{http://www.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