def clz_pick
import bend-collections-laws-math@1.0.0.0/src/math/w64.bend as W64import Base
import bend-collections-laws-math@1.0.0.0/src/math/u64.bend as W
546def clz_pick(+a: W.U64, high: Bool) -> Nat:
547 match high:
548 case True{}:
549 Nat.sub(32n, bitlen(hi(a)))
550 case False{}:
551 Nat.sub(64n, bitlen(lo(a)))