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+'\" te
+.\" Copyright (c) 2001, the Institute of ElectricalPortions Copyright (c) 2006, Sun Microsystems, Inc. All Rights Reserved. and Electronics Engineers, Inc. and The Open Group. All Rights Reserved.
+.\" Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at 
+.\" http://www.opengroup.org/bookstore/.
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+.\"  This notice shall appear on any product containing this material.
+.\" The contents of this file are subject to the terms of the Common Development and Distribution License (the "License").  You may not use this file except in compliance with the License.
+.\" You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing.  See the License for the specific language governing permissions and limitations under the License.
+.\" When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE.  If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
+.TH fma 3M "12 Jul 2006" "SunOS 5.11" "Mathematical Library Functions"
+.SH NAME
+fma, fmaf, fmal \- floating-point multiply-add
+.SH SYNOPSIS
+.LP
+.nf
+c99 [ \fIflag\fR... ] \fIfile\fR... \fB-lm\fR [ \fIlibrary\fR... ]
+#include <math.h>
+
+\fBdouble\fR \fBfma\fR(\fBdouble\fR \fIx\fR, \fBdouble\fR \fIy\fR, \fBdouble\fR \fIz\fR);
+.fi
+
+.LP
+.nf
+\fBfloat\fR \fBfmaf\fR(\fBfloat\fR \fIx\fR, \fBfloat\fR \fIy\fR, \fBfloat\fR \fIz\fR);
+.fi
+
+.LP
+.nf
+\fBlong double\fR \fBfmal\fR(\fBlong double\fR \fIx\fR, \fBlong double\fR \fIy\fR, \fBlong double\fR \fIz\fR);
+.fi
+
+.SH DESCRIPTION
+.sp
+.LP
+These functions compute (\fIx\fR * \fIy\fR) + \fIz\fR, rounded as one ternary
+operation. They compute the value (as if) to infinite precision and round once
+to the result format, according to the rounding mode characterized by the value
+of \fBFLT_ROUNDS\fR.
+.SH RETURN VALUES
+.sp
+.LP
+Upon successful completion, these functions return (\fIx\fR * \fIy\fR) +
+\fIz\fR, rounded as one ternary operation.
+.sp
+.LP
+If \fIx\fR or \fIy\fR are NaN, a NaN is returned.
+.sp
+.LP
+If \fIx\fR multiplied by \fIy\fR is an exact infinity and \fIz\fR is also an
+infinity but with the opposite sign, a domain error occurs and a NaN is
+returned.
+.sp
+.LP
+If one of \fIx\fR and \fIy\fR is infinite, the other is 0, and \fIz\fR is not a
+NaN, a domain error occurs and a NaN is returned.
+.sp
+.LP
+If \fIx\fR*\fIy\fR is not 0*Inf nor Inf*0 and \fIz\fR is a NaN, a NaN is
+returned.
+.SH ERRORS
+.sp
+.LP
+These functions will fail if:
+.sp
+.ne 2
+.mk
+.na
+\fBDomain Error\fR
+.ad
+.RS 16n
+.rt  
+The value of \fIx\fR*\fIy\fR+\fIz\fR is invalid or the value \fIx\fR*\fIy\fR is
+invalid.
+.sp
+If the integer expression (\fBmath_errhandling\fR & \fBMATH_ERREXCEPT\fR) is
+non-zero, the invalid floating-point exception will be raised.
+.RE
+
+.sp
+.ne 2
+.mk
+.na
+\fBRange Error\fR
+.ad
+.RS 16n
+.rt  
+The result overflows.
+.sp
+If the integer expression (\fBmath_errhandling\fR & \fBMATH_ERREXCEPT\fR) is
+non-zero, the overflow floating-point exception will be raised.
+.RE
+
+.SH USAGE
+.sp
+.LP
+An application wanting to check for exceptions should call
+\fBfeclearexcept\fR(\fBFE_ALL_EXCEPT\fR) before calling these functions. On
+return, if \fBfetestexcept\fR(\fBFE_INVALID\fR | \fBFE_DIVBYZERO\fR |
+\fBFE_OVERFLOW\fR | \fBFE_UNDERFLOW\fR) is non-zero, an exception has been
+raised. An application should either examine the return value or check the
+floating point exception flags to detect exceptions.
+.SH ATTRIBUTES
+.sp
+.LP
+See \fBattributes\fR(5) for descriptions of the following attributes:
+.sp
+
+.sp
+.TS
+tab() box;
+cw(2.75i) |cw(2.75i) 
+lw(2.75i) |lw(2.75i) 
+.
+ATTRIBUTE TYPEATTRIBUTE VALUE
+_
+Interface StabilityStandard
+_
+MT-LevelMT-Safe
+.TE
+
+.SH SEE ALSO
+.sp
+.LP
+\fBfeclearexcept\fR(3M), \fBfetestexcept\fR(3M), \fBmath.h\fR(3HEAD),
+\fBattributes\fR(5), \fBstandards\fR(5)
