law ctz64_first_set

bend-osdev-algo@0.1.0.0 · LAWS.bend:144

import Base
import bend-osdev-word64@0.1.0.0/word64.bend as W
import bend-osdev-algo@0.1.0.0/algo.bend as A

144law ctz64_first_set:
145  for a: W.W64
146  for k: Nat
147  for e: {A.bits64.first_set(a) == Some{k} : Maybe<&2, Nat>}
148  {A.bits64.ctz(a) == k : Nat}