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(* 02110-1301 USA                                                     *)
(* Contribution to the Coq Library   V6.3 (July 1999)                    *)
(****************************************************************)
(*           The Calculus of Inductive Constructions            *)
(*                       COQ v5.10                              *)
(*                                                              *)
(* Laurent Arditi.  Laboratoire I3S. CNRS ura 1376.             *)
(* Universite de Nice - Sophia Antipolis                        *)
(* arditi@unice.fr, http://wwwi3s.unice.fr/~arditi/lolo.html    *)
(*                                                              *)
(* date: july 1995                                              *)
(* file: LemPrelim.v                                            *)
(* contents: VERIFICATION OF A SEQUENTIAL MULTIPLIER. Proofs of *)
(* some preliminary lemmas.                                     *)
(****************************************************************)
(* Des lemmes preliminaires *)
Require Export Definitions.

Lemma R1_lem :
forall t : nat, (* R1(t)[0:n-1-t]=B[t:n-1] *)
t <= size -> truncbv (R1 t) (size - t) = stripbv V1 t.