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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);

       Compile with -std=c99; link with -lm.

DESCRIPTION
       The fma() function computes x * y + z.  The result is rounded according
       to the rounding mode determined by the value of FLT_ROUNDS.  FLT_ROUNDS
       indicates  the  implementation-defined  rounding behavior for floating-
       point addition, and has one of the following values:

       -1     The rounding mode is not determinable.

       0      Rounding is towards 0.

       1      Rounding is towards nearest number.

       2      Rounding is towards positive infinity.

       3      Rounding is towards negative infinity.

       Other values represent machine-dependent, non-standard rounding  modes.

CONFORMING TO
       C99.

SEE ALSO
       fenv(3), remainder(3), remquo(3)

COLOPHON
       This  page  is  part of release 3.05 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/.

                                  2002-07-27                            FMA(3)

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