fma(3M) 																   fma(3M)

NAME

       fma(), fmaf(), fmaw(), fmal(), fmaq() - floating multiply-add functions

SYNOPSIS

DESCRIPTION

       returns	(x*y)  +  z,  rounded as one ternary operation:  it computes the value (as if) to infinite precision and rounds once to the result
       format, according to the current rounding mode.

       is a version of it takes arguments and returns a result.

       is a version of it takes arguments and returns a result.

       is an version of it takes arguments and returns an result.

       is equivalent to on HP-UX systems.

       The and macros are defined in indicating that are each as fast as a multiply and add.

USAGE

       These functions are available only for Integrity servers.

       To use these functions, compile either with the default option or with the and options.

       To use or compile also with the option.

       To use these functions, make sure your program includes Link in the math library by specifying on the compiler or linker command line.

RETURN VALUE

       If one of x and y is infinite, the other is zero, and z is a NaN, returns NaN and optionally raises the invalid exception.

       If one of x and y is infinite, the other is zero, and z is not a NaN, returns NaN and raises the invalid exception.

       If x times y is an exact infinity and z is also an infinity but with the opposite sign, returns NaN and raises the invalid exception.

       returns a properly signed infinity in lieu of a value whose magnitude is too large, and raise the overflow and inexact exceptions.

       raises the underflow and inexact exceptions whenever a result is tiny (essentially denormal or zero) and thereby suffers loss of  accuracy,
       and may raise those exceptions if the result is merely tiny.

       raises the inexact exception whenever a rounded result does not equal the mathematical result.

ERRORS

       No errors are defined.

SEE ALSO

       math(5).

STANDARDS CONFORMANCE

       : ISO/IEC C99 (including Annex F, ``IEC 60559 floating-point arithmetic'')

							     HP Integrity Server Only							   fma(3M)