+++ /dev/null
-.\" Copyright 2002 Walter Harms (walter.harms@informatik.uni-oldenburg.de)
-.\" and Copyright 2008, Linux Foundation, written by Michael Kerrisk
-.\" <mtk.manpages@gmail.com>
-.\"
-.\" %%%LICENSE_START(GPL_NOVERSION_ONELINE)
-.\" Distributed under GPL
-.\" %%%LICENSE_END
-.\"
-.\" Modified 2004-11-15, Added further text on FLT_ROUNDS
-.\" as suggested by AEB and Fabian Kreutz
-.\"
-.TH FMA 3 2013-09-17 "" "Linux Programmer's Manual"
-.SH NAME
-fma, fmaf, fmal \- floating-point multiply and add
-.SH SYNOPSIS
-.nf
-.B #include <math.h>
-.sp
-.BI "double fma(double " x ", double " y ", double " z );
-.br
-.BI "float fmaf(float " x ", float " y ", float " z );
-.br
-.BI "long double fmal(long double " x ", long double " y ", long double " z );
-.fi
-.sp
-Link with \fI\-lm\fP.
-.sp
-.in -4n
-Feature Test Macro Requirements for glibc (see
-.BR feature_test_macros (7)):
-.in
-.sp
-.ad l
-.BR fma (),
-.BR fmaf (),
-.BR fmal ():
-.RS 4
-_XOPEN_SOURCE\ >=\ 600 || _ISOC99_SOURCE ||
-_POSIX_C_SOURCE\ >=\ 200112L;
-.br
-or
-.I cc\ -std=c99
-.RE
-.ad
-.SH DESCRIPTION
-The
-.BR fma ()
-function computes
-.IR x " * " y " + " z .
-The result is rounded as one ternary operation according to the
-current rounding mode (see
-.BR fenv (3)).
-.SH RETURN VALUE
-These functions return the value of
-.IR x " * " y " + " z ,
-rounded as one ternary operation.
-
-If
-.I x
-or
-.I y
-is a NaN, a NaN is returned.
-
-If
-.I x
-times
-.I y
-is an exact infinity, and
-.I z
-is an infinity with the opposite sign,
-a domain error occurs,
-and a NaN is returned.
-
-.\" POSIX.1-2008 allows some possible differences for the following two
-.\" domain error cases, but on Linux they are treated the same (AFAICS).
-.\" Nevertheless, we'll mirror POSIX.1 and describe the two cases
-.\" separately.
-If one of
-.I x
-or
-.I y
-is an infinity, the other is 0, and
-.I z
-is not a NaN,
-a domain error occurs, and
-a NaN is returned.
-.\" POSIX.1 says that a NaN or an implementation-defined value shall
-.\" be returned for this case.
-
-If one of
-.I x
-or
-.I y
-is an infinity, and the other is 0, and
-.I z
-is a NaN,
-.\" POSIX.1 makes the domain error optional for this case.
-a domain error occurs, and
-a NaN is returned.
-
-If
-.I x
-times
-.I y
-is not an infinity times zero (or vice versa), and
-.I 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.
-.SH ERRORS
-See
-.BR math_error (7)
-for information on how to determine whether an error has occurred
-when calling these functions.
-.PP
-The following errors can occur:
-.TP
-Domain error: \fIx\fP * \fIy\fP + \fIz\fP, \
-or \fIx\fP * \fIy\fP is invalid and \fIz\fP is not a NaN
-.\" .I errno
-.\" is set to
-.\" .BR EDOM .
-An invalid floating-point exception
-.RB ( FE_INVALID )
-is raised.
-.TP
-Range error: result overflow
-.\" .I errno
-.\" is set to
-.\" .BR ERANGE .
-An overflow floating-point exception
-.RB ( FE_OVERFLOW )
-is raised.
-.TP
-Range error: result underflow
-.\" .I errno
-.\" is set to
-.\" .BR ERANGE .
-An underflow floating-point exception
-.RB ( FE_UNDERFLOW )
-is raised.
-.PP
-These functions do not set
-.IR errno .
-.\" FIXME . Is it intentional that these functions do not set errno?
-.\" Bug raised: http://sources.redhat.com/bugzilla/show_bug.cgi?id=6801
-.SH VERSIONS
-These functions first appeared in glibc in version 2.1.
-.SH ATTRIBUTES
-.SS Multithreading (see pthreads(7))
-The
-.BR fma (),
-.BR fmaf (),
-and
-.BR fmal ()
-functions are thread-safe.
-.SH CONFORMING TO
-C99, POSIX.1-2001.
-.SH SEE ALSO
-.BR remainder (3),
-.BR remquo (3)
-.SH COLOPHON
-This page is part of release 3.79 of the Linux
-.I man-pages
-project.
-A description of the project,
-information about reporting bugs,
-and the latest version of this page,
-can be found at
-\%http://www.kernel.org/doc/man\-pages/.
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