def bitw.ffs_low.z
import bend-osdev-algo@0.1.0.0/PROOF.bend as PROOFimport Base
import bend-osdev-algo@0.1.0.0/algo.bend as A
237def bitw.ffs_low.z(m: Nat) -> {Bool.and(bitw.below(0n, A.bitw.ffs.step(False{}, m)), False{}) == False{} : Bool}:
238 match m:
239 case 0n:
240 {==}
241 case 1n+k:
242 {==}