fact: Definition char_set_bit (b : bool) (i : nat) (c : char) := if b then wplus c (NToWord _ (Npow2 i)) else c.
imports: Fiat.Common.Coq__8_4__8_5__Compat Bedrock.Word Coq.ZArith.ZArith Coq.NArith.NArith Coq.Arith.Arith Coq.Numbers.Natural.Peano.NPeano Coq.Logic.Eqdep_dec Fiat.Narcissus.Common.Specs