diff options
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}. |