fact: Definition cons (c: char) {n} (b: t n): t (S n) := Vector.cons _ c n b.
imports: Fiat.Common.Coq__8_4__8_5__Compat Coq.Arith.Peano_dec Coq.Logic.Eqdep_dec Coq.ZArith.ZArith Fiat.Narcissus.Common.Specs Fiat.Narcissus.Formats.WordOpt Fiat.Narcissus.Formats.Vector Fiat.Narcissus.BinLib.Core Bedrock.Word