(************************************************************************)
(*         *      The Rocq Prover / The Rocq Development Team           *)
(*  v      *         Copyright INRIA, CNRS and contributors             *)
(* <O___,, * (see version control and CREDITS file for authors & dates) *)
(*   \VV/  **************************************************************)
(*    //   *    This file is distributed under the terms of the         *)
(*         *     GNU Lesser General Public License Version 2.1          *)
(*         *     (see LICENSE file for the text of the license)         *)
(************************************************************************)
(** * DecimalQ  Proofs that conversions between decimal numbers and [Q] are bijections. *)

Lemma dnorm_spec_f d :
let f := match d with Decimal _ f => f | DecimalExp _ f _ => f end in
let f' := match dnorm d with Decimal _ f => f | DecimalExp _ f _ => f end in
f' = f.