NAME
fabs, fabsf,
fabsl —
floating-point absolute value
functions
LIBRARY
library “libm”
SYNOPSIS
#include
<math.h>
double
fabs(double
x);
float
fabsf(float
x);
long double
fabsl(long
double x);
DESCRIPTION
Thefabs(),
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
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”).