1 /* const.h: Constants for bc. */
3 /* This file is part of GNU bc.
4 Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License , or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; see the file COPYING. If not, write to
18 The Free Software Foundation, Inc.
19 59 Temple Place, Suite 330
22 You may contact the author by:
23 e-mail: philnelson@acm.org
24 us-mail: Philip A. Nelson
25 Computer Science Department, 9062
26 Western Washington University
27 Bellingham, WA 98226-9062
29 *************************************************************************/
32 /* Define INT_MAX and LONG_MAX if not defined. Assuming 32 bits... */
35 #define INT_MAX 0x7FFFFFFF
38 #define LONG_MAX 0x7FFFFFFF
42 /* Define constants in some reasonable size. The next 4 constants are
46 /* <limits.h> on a POSIX.2 system may have defined these. Override. */
53 #define BC_BASE_MAX INT_MAX
54 #define BC_SCALE_MAX INT_MAX
55 #define BC_STRING_MAX INT_MAX
58 /* Definitions for arrays. */
60 #define BC_DIM_MAX 65535 /* this should be NODE_SIZE^NODE_DEPTH-1 */
62 #define NODE_SIZE 16 /* Must be a power of 2. */
63 #define NODE_MASK 0xf /* Must be NODE_SIZE-1. */
64 #define NODE_SHIFT 4 /* Number of 1 bits in NODE_MASK. */
68 /* Other BC limits defined but not part of POSIX. */
70 #define BC_LABEL_GROUP 64
71 #define BC_LABEL_LOG 6
72 #define BC_START_SIZE 1024 /* Initial code body size. */
74 /* Maximum number of variables, arrays and functions and the
75 allocation increment for the dynamic arrays. */
77 #define MAX_STORE 32767
80 /* Other interesting constants. */
85 /* for use with lookup (). */