vec_msub

Purpose

Returns a vector containing the results of performing a multiply-subtract operation using the given vectors.

Syntax

d=vec_msub(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 values of the elements of the result are the product of the values of the corresponding elements of a and b, minus the values of the corresponding elements 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: (-10.0,  0.0, 10.0, 20.0)