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(***********************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA-Rocquencourt & LRI-CNRS-Orsay *)
(* \VV/ *************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(***********************************************************************)
(*i $Id$ *)
Require Datatypes.
Require Peano.
V7only[
Syntax constr
level 0:
S [ (S $p) ] -> [$p:"nat_printer":9]
| O [ O ] -> ["(0)"].
].
(* Outside the module to be able to parse the grammar for 0,1,2... !! *)
Delimits Scope nat_scope with N.
(* For parsing/printing based on scopes *)
Module nat_scope.
(* Warning: this hides sum and prod and breaks sumor symbolic notation *)
Open Scope nat_scope.
Infix 4 "+" plus : nat_scope V8only (left associativity).
Infix 4 "-" minus : nat_scope V8only (left associativity).
Infix 3 "*" mult : nat_scope V8only (left associativity).
Infix NONA 5 "<=" le : nat_scope.
Infix NONA 5 "<" lt : nat_scope.
Infix NONA 5 ">=" ge : nat_scope.
Infix NONA 5 ">" gt : nat_scope.
End nat_scope.
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