vec_madd

Purpose

Returns a vector containing the results of performing a fused multiply-add operation for each corresponding set of elements of the given vectors.

Syntax

d=vec_madd(a, b, c)

Result and argument types

The following table describes the types of the returned value and the function arguments.

d	a	b	c
`vector4double`	`vector4double`	`vector4double`	`vector4double`

Result value

The value of each element of the result is the product of the values of the corresponding elements of a and b, added to the value of the corresponding element of c.

Formula

d[0] = ( a[0] × b[0] ) + c[0]
d[1] = ( a[1] × b[1] ) + c[1]
d[2] = ( a[2] × b[2] ) + c[2]
d[3] = ( a[3] × b[3] ) + c[3]

Example

a =  (10.0, 10.0, 10.0, 10.0)
b =  ( 1.0,  2.0,  3.0,  4.0)
c =  (20.0, 20.0, 20.0, 20.0)
d: (30.0, 40.0, 50.0, 60.0)