diff options
| author |  Stephane Glondu <steph@glondu.net> | 2012-01-12 16:02:20 +0100 |
|---|---|---|
| committer | Stephane Glondu <steph@glondu.net> | 2012-01-12 16:02:20 +0100 |
| commit | 97fefe1fcca363a1317e066e7f4b99b9c1e9987b (patch) | |
| tree | 97ec6b7d831cc5fb66328b0c63a11db1cbb2f158 /theories/ZArith/ZArith_dec.v | |
| parent | 300293c119981054c95182a90c829058530a6b6f (diff) | |
Imported Upstream version 8.4~betaupstream/8.4_beta
Diffstat (limited to 'theories/ZArith/ZArith_dec.v')
| -rw-r--r-- | theories/ZArith/ZArith_dec.v | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/theories/ZArith/ZArith_dec.v b/theories/ZArith/ZArith_dec.v index b6766640..76308e60 100644 --- a/theories/ZArith/ZArith_dec.v +++ b/theories/ZArith/ZArith_dec.v @@ -1,13 +1,11 @@ (************************************************************************) (* v * The Coq Proof Assistant / The Coq Development Team *) -(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2011 *) +(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2010 *) (* \VV/ **************************************************************) (* // * This file is distributed under the terms of the *) (* * GNU Lesser General Public License Version 2.1 *) (************************************************************************) -(*i $Id: ZArith_dec.v 14641 2011-11-06 11:59:10Z herbelin $ i*) - Require Import Sumbool. Require Import BinInt. @@ -38,17 +36,12 @@ Proof. intro; apply Zcompare_rect. Defined. +Notation Z_eq_dec := Z.eq_dec (only parsing). + Section decidability. Variables x y : Z. - (** * Decidability of equality on binary integers *) - - Definition Z_eq_dec : {x = y} + {x <> y}. - Proof. - decide equality; apply positive_eq_dec. - Defined. - (** * Decidability of order on binary integers *) Definition Z_lt_dec : {x < y} + {~ x < y}. |