FABS(3) | Library Functions Manual | FABS(3)

# 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”).

March 17, 2016 | NetBSD 8.2