NAME

fma, fmaf, fmal — floating multiply-add

SYNOPSIS

Math Library (libm, -lm)
#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);

DESCRIPTION

The fma(), fmaf() and fmal() functions compute (x * y) + z, rounded as one ternary operation. The result is rounded according to the current rounding mode.

RETURN VALUES

The fma(), fmaf() and fmal() functions return (x * y) + z, rounded as one ternary operation.

SEE ALSO

fegetround(3), remainder(3)

STANDARDS

The fma(), fmaf() and fmal() functions conform to ISO/IEC 9899:1999 (“ISO C99”).