NAME
fabs,
fabsf,
fabsl —
floating-point absolute value functions
LIBRARY
Math Library (libm, -lm)
SYNOPSIS
#include <math.h>
double
fabs(
double
x);
float
fabsf(
float
x);
long double
fabsl(
long double
x);
DESCRIPTION
The
fabs(),
fabsf() and
fabsl() functions compute the absolute value of a
floating-point number
x.
RETURN VALUES
Functions of the
fabs() family return 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”). The
fabsf() and
fabsl() functions conform to
ISO/IEC 9899:1999 (“ISO C99”).