fabsl(3m) [opensolaris man page]

fabs(3M)						  Mathematical Library Functions						  fabs(3M)

NAME

       fabs, fabsf, fabsl - absolute value function

SYNOPSIS

       c99 [ flag... ] file... -lm [ library... ]
       #include <math.h>

       double fabs(double x);

       float fabsf(float x);

       long double fabsl(long double x);

DESCRIPTION

       These functions compute the absolute value of x, |x|.

RETURN VALUES

       Upon successful completion, these functions return the absolute value of x.

       If x is NaN, a NaN is returned.

       If x is +-0, +0 is returned.

       If x is +-Inf, +Inf is returned.

ERRORS

       No errors are defined.

ATTRIBUTES

       See attributes(5) for descriptions of the following attributes:

       +-----------------------------+-----------------------------+
       |      ATTRIBUTE TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Standard			   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       isnan(3M), math.h(3HEAD), attributes(5), standards(5)

SunOS 5.11							    12 Jul 2006 							  fabs(3M)

FABS(3) 						     Linux Programmer's Manual							   FABS(3)

NAME

       fabs, fabsf, fabsl - absolute value of floating-point number

SYNOPSIS

       #include <math.h>

       double fabs(double x);
       float fabsf(float x);
       long double fabsl(long double x);

       Link with -lm.

   Feature Test Macro Requirements for glibc (see feature_test_macros(7)):

       fabsf(), fabsl():
	   _BSD_SOURCE || _SVID_SOURCE || _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE || _POSIX_C_SOURCE >= 200112L;
	   or cc -std=c99

DESCRIPTION

       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

   Multithreading (see pthreads(7))
       The fabs(), fabsf(), and fabsl() functions are thread-safe.

CONFORMING TO

       C99, POSIX.1-2001.  The variant returning double also conforms to SVr4, 4.3BSD, C89.

SEE ALSO

       abs(3), cabs(3), ceil(3), floor(3), labs(3), rint(3)

COLOPHON

       This  page is part of release 3.53 of the Linux man-pages project.  A description of the project, and information about reporting bugs, can
       be found at http://www.kernel.org/doc/man-pages/.

								    2013-07-10								   FABS(3)