From 9043add656177eeac1491a73d2f3ab92bec0013c Mon Sep 17 00:00:00 2001
From: Benjamin Barenblat <bbaren@debian.org>
Date: Sat, 29 Dec 2018 14:31:27 -0500
Subject: Imported Upstream version 8.8.2

---
 plugins/nsatz/Nsatz.v | 21 ++++++++++++++-------
 1 file changed, 14 insertions(+), 7 deletions(-)

(limited to 'plugins/nsatz/Nsatz.v')

diff --git a/plugins/nsatz/Nsatz.v b/plugins/nsatz/Nsatz.v
index b11d15e5..c5a09d67 100644
--- a/plugins/nsatz/Nsatz.v
+++ b/plugins/nsatz/Nsatz.v
@@ -1,9 +1,11 @@
 (************************************************************************)
-(*  v      *   The Coq Proof Assistant  /  The Coq Development Team     *)
-(* <O___,, *   INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2016     *)
+(*         *   The Coq Proof Assistant / The Coq Development Team       *)
+(*  v      *   INRIA, CNRS and contributors - Copyright 1999-2018       *)
+(* <O___,, *       (see CREDITS file for the list of authors)           *)
 (*   \VV/  **************************************************************)
-(*    //   *      This file is distributed under the terms of the       *)
-(*         *       GNU Lesser General Public License Version 2.1        *)
+(*    //   *    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)         *)
 (************************************************************************)
 
 (*
@@ -28,6 +30,7 @@ Require Export Ncring_initial.
 Require Export Ncring_tac.
 Require Export Integral_domain.
 Require Import DiscrR.
+Require Import ZArith.
 
 Declare ML Module "nsatz_plugin".
 
@@ -54,9 +57,8 @@ simpl. simpl; cring.
 Qed.
 
 (* adpatation du code de Benjamin aux setoides *)
-Require Import ZArith.
-Require Export Ring_polynom.
-Require Export InitialRing.
+Export Ring_polynom.
+Export InitialRing.
 
 Definition PolZ := Pol Z.
 Definition PEZ := PExpr Z.
@@ -462,6 +464,11 @@ try (try apply Rsth;
 exact Rplus_opp_r.
 Defined.
 
+Class can_compute_Z (z : Z) := dummy_can_compute_Z : True.
+Hint Extern 0 (can_compute_Z ?v) =>
+  match isZcst v with true => exact I end : typeclass_instances.
+Instance reify_IZR z lvar {_ : can_compute_Z z} : reify (PEc z) lvar (IZR z).
+
 Lemma R_one_zero: 1%R <> 0%R.
 discrR.
 Qed.
-- 
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