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(*         *   The Coq Proof Assistant / The Coq Development Team       *)
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(*         *     GNU Lesser General Public License Version 2.1          *)
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(** Binary Integers : results about Z.compare *)
(** Initial author: Pierre Crégut (CNET, Lannion, France *)
(** THIS FILE IS DEPRECATED. It is now almost entirely made of compatibility formulations for results already present in BinInt.Z. *)
Require Export BinPos BinInt.
Local Open Scope Z_scope.
(***************************)
(** * Comparison on integers *)
Proof Z.gt_lt_iff.
Proof eq_sym (Z.compare_antisym n m).
(** * Transitivity of comparison *)
Proof Z.lt_trans.
(** * Comparison and opposite *)
(** * Comparison first-order specification *)
(** * Comparison and addition *)

Lemma Zplus_compare_compat (r:comparison) (n m p q:Z) :
(n ?= m) = r -> (p ?= q) = r -> (n + p ?= m + q) = r.