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 2.80 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/.