NAME

fabs, fabsf — floating-point absolute value function

LIBRARY

Math Library (libm, -lm)

SYNOPSIS

#include <math.h>

double
fabs(double x);

float
fabsf(float x);

DESCRIPTION

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

RETURN VALUES

The fabs() function returns the absolute value of x.

SEE ALSO

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

STANDARDS

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