vdot4+ ( a b accumulator -- result )

Vocabulary

math.vectors

Inputs

a	a sequence
b	a sequence
accumulator	a sequence

Outputs

result

a sequence

Word description

Adds groups of four adjacent byte products to four 32-bit accumulators. Both unsigned inputs require uint-4 accumulators; all other signedness combinations require int-4. Accumulation wraps modulo 2^32. Optional ARM kernels are selected at runtime.

Definition

IN: math.vectors

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

Methods

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

M: simd-128 vdot4+ 3dup check-integer-accumulate (vdot4+) ;