This document is a Mac OS X manual page. Manual pages are a command-line technology for providing documentation. You can view these manual pages locally using the man(1) command. These manual pages come from many different sources, and thus, have a variety of writing styles.

For more information about the manual page format, see the manual page for manpages(5).

FABS(3)                  BSD Library Functions Manual                  FABS(3)

NAME
     fabs -- floating-point absolute value function

SYNOPSIS
     #include <math.h>

     double
     fabs(double x);

     long double
     fabsl(long double x);

     float
     fabsf(float x);

DESCRIPTION
     The fabs() functions compute the absolute value of a floating-point number x.

SPECIAL VALUES
     fabs(+-0) returns 0.

     fabs(+-infinity) returns +infinity.

SEE ALSO
     abs(3), ceil(3), floor(3), rint(3), math(3)

STANDARDS
     The fabs() functions conform to ISO/IEC 9899:1999(E).

BSD                            November 20, 2002                           BSD