fact: Definition bv_zextn n (i: N) (bv1: bitvector n) : bitvector (i + n) := @MkBitvector (i + n) (@M.bv_zextn n i bv1) (@M.bv_zextn_size n i bv1 (wf bv1)).
imports: List Bool NArith Psatz Int63 Nnat ZArith Misc ProofIrrelevance