def x32.lane
import bend-kit-hash@0.3.0.2/hash.bend as Hashimport Base
457# The four accumulators take lanes in turn: v1 eats this word and moves to the back.
458def x32.lane(v: V4, +w: U32) -> V4:
459 match v:
460 case V4{a, b, c, d}:
461 V4{b, c, d, x32.round(a, w)}