fma(3m) [hpux man page]

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)

fmad64(3M)																fmad64(3M)

NAME

       fmad64(), fmad128(), fmad32() - decimal floating multiply-add functions

SYNOPSIS

DESCRIPTION

       The  function  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 (decimal) rounding mode.

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

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

       These math functions are supported for HP-UX 11i Version 3 September 2008 Update and forward.

USAGE

       To use any of these functions, compile with the option.

       Make sure your program defines and then includes

       Link in the math library by specifying or on the linking command line.

       For more information, see the at the following site:

RETURN VALUE

       If x, y, or z is NaN, returns NaN.

       If one of x and y is infinite, the other is zero, and z is not 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 the properly signed infinity (or, in some non-default rounding direction modes, the properly signed maximum-magnitude  finite  num-
       ber) in lieu of a value whose magnitude is too large, and raises the overflow and inexact exceptions.

       raises the underflow exception whenever a result is tiny (essentially subnormal or zero) and inexact.

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

ERRORS

       If one of x and y is infinite, the other is zero, and z is not NaN, sets to

       If x times y is an exact infinity and z is also an infinity but with the opposite sign, sets to

       If the correct value would overflow, sets to

SEE ALSO

       math(5).

STANDARDS CONFORMANCE

       These functions conform to ISO/IEC TR 24732, "Extension for the programming language C to support decimal floating-point arithmetic".

							     HP Integrity Server Only							fmad64(3M)