proposition: Lemma wnot_involutive {sz} : forall (w: word sz), wnot (wnot w) = w.
proof: Proof. induction w. - reflexivity. - simpl. rewrite IHw, Bool.negb_involutive; reflexivity. Qed.
imports: Fiat.Common.Coq__8_4__8_5__Compat List Bedrock.Word Coq.ZArith.ZArith Coq.micromega.Psatz NArith NArithRing