OpenBSD manual page server

Manual Page Search Parameters

FABS(3) Library Functions Manual FABS(3)

fabs, fabsf, fabslfloating-point absolute value functions

#include <math.h>

fabs(double x);

fabsf(float x);

long double
fabsl(long double x);

The () function computes the absolute value of a floating-point number x. The () function is a single precision version of fabs(). The () function is an extended precision version of fabs().

The fabs(), fabsf() and fabsl() functions return the absolute value of x.

abs(3), ceil(3), floor(3), rint(3)

The fabs() function conforms to ANSI X3.159-1989 (“ANSI C89”).

An fabs() function first appeared in Version 6 AT&T UNIX.

July 18, 2013 OpenBSD-current