(vdot4+) ( a b accumulator -- result )

Vocabulary

math.vectors.simd.extensions

Inputs

a	an object
b	an object
accumulator	an object

Outputs

result

an object

Definition

USING: system ;

IN: math.vectors.simd.extensions

HOOK: (vdot4+) cpu ( a b accumulator -- result )

Methods

USING: kernel math math.vectors.simd.extensions sequences ;

M:: object (vdot4+) ( a b accumulator -- result )
    4 <iota> [| lane |
        lane accumulator nth 4 <iota> swap [| value j |
            lane 4 * j + :> index index a nth index b nth *
            value +
        ] reduce
    ] accumulator map-as ;