fmal man page on ElementaryOS

Man page or keyword search:  
man Server   4994 pages
apropos Keyword Search (all sections)
Output format
ElementaryOS logo
[printable version]

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

NAME
       fma, fmaf, fmal - floating-point multiply and add

SYNOPSIS
       #include <math.h>

       double fma(double x, double y, double z);
       float fmaf(float x, float y, float z);
       long double fmal(long double x, long double y, long double z);

       Link with -lm.

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

       fma(), fmaf(), fmal():
	   _XOPEN_SOURCE >= 600 || _ISOC99_SOURCE ||
	   _POSIX_C_SOURCE >= 200112L;
	   or cc -std=c99

DESCRIPTION
       The fma() function computes x * y + z.  The result is  rounded  as  one
       ternary operation according to the current rounding mode (see fenv(3)).

RETURN VALUE
       These  functions	 return the value of x * y + z, rounded as one ternary
       operation.

       If x or y is a NaN, a NaN is returned.

       If x times y is an exact infinity, and z is an infinity with the	 oppo‐
       site sign, a domain error occurs, and a NaN is returned.

       If  one of x or y is an infinity, the other is 0, and z is not a NaN, a
       domain error occurs, and a NaN is returned.

       If one of x or y is an infinity, and the other is 0, and z is a NaN,  a
       domain error occurs, and a NaN is returned.

       If  x times y is not an infinity times zero (or vice versa), and z is a
       NaN, a NaN is returned.

       If the result overflows, a range error occurs, and an infinity with the
       correct sign is returned.

       If  the	result	underflows,  a	range  error occurs, and a signed 0 is
       returned.

ERRORS
       See math_error(7) for information on how to determine whether an	 error
       has occurred when calling these functions.

       The following errors can occur:

       Domain error: x * y + z, or x * y is invalid and z is not a NaN
	      An invalid floating-point exception (FE_INVALID) is raised.

       Range error: result overflow
	      An overflow floating-point exception (FE_OVERFLOW) is raised.

       Range error: result underflow
	      An underflow floating-point exception (FE_UNDERFLOW) is raised.

       These functions do not set errno.

VERSIONS
       These functions first appeared in glibc in version 2.1.

ATTRIBUTES
   Multithreading (see pthreads(7))
       The fma(), fmaf(), and fmal() functions are thread-safe.

CONFORMING TO
       C99, POSIX.1-2001.

SEE ALSO
       remainder(3), remquo(3)

COLOPHON
       This  page  is  part of release 3.54 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/.

				  2013-09-17				FMA(3)
[top]

List of man pages available for ElementaryOS

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
...................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net