1 /***********************************************************************/
5 /* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
7 /* Copyright 1999 Institut National de Recherche en Informatique et */
8 /* en Automatique. All rights reserved. This file is distributed */
9 /* under the terms of the GNU Library General Public License, with */
10 /* the special exception on linking described in file ../../LICENSE. */
12 /***********************************************************************/
14 /* $Id: nat.h 5880 2003-10-24 09:18:01Z xleroy $ */
16 /* Nats are represented as unstructured blocks with tag Custom_tag. */
18 #define Digit_val(nat,pos) (((bng) Data_custom_val(nat))[pos])