vctz ( v -- w )

Vocabulary

math.vectors

Inputs

v	a sequence

Outputs

w	a sequence

Word description

Counts trailing zero bits in each integer SIMD lane. A zero lane returns its bit width.

Definition

IN: math.vectors

GENERIC: vctz ( v -- w )

Methods

USING: generic kernel math.vectors math.vectors.simd
math.vectors.simd.intrinsics math.vectors.simd.private ;

M: simd-128 vctz
    "ctz" over simd-rep
    [ (simd-unary) ] [ M\ simd-128 vctz (call-next-method) ]
    vx->v-op ; inline