fabsf3
Absolute value of floating-point number
Part of fabs(3).
Usage
#include <math.h>
double fabs(double x); float fabsf(float x); long double fabsl(long double x);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
fabsf(), fabsl():
_ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L
|| /* Since glibc 2.19: */ _DEFAULT_SOURCE
|| /* glibc <= 2.19: */ _BSD_SOURCE || _SVID_SOURCE
Library
Math library (libm, -lm)
Overview
These functions return the absolute value of the floating-point number x.
Return value
These functions return the absolute value of x.
If x is a NaN, a NaN is returned.
If x is -0, +0 is returned.
If x is negative infinity or positive infinity, positive infinity is returned.
Errors
No errors occur.
Attributes
For an explanation of the terms used in this section, see attributes(7).
| Interface | Attribute | Value |
| fabs(), fabsf(), fabsl() | Thread safety | MT-Safe |
Releases
13 releases since Debian 3.0 (Woody); the text changed 12 times.