1 /* const.h: Constants for bc. */ 2 3 /* This file is part of GNU bc. 4 Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc. 5 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. 10 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. 15 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, 675 Mass Ave, Cambridge, MA 02139, USA. 19 20 You may contact the author by: 21 e-mail: phil@cs.wwu.edu 22 us-mail: Philip A. Nelson 23 Computer Science Department, 9062 24 Western Washington University 25 Bellingham, WA 98226-9062 26 27 *************************************************************************/ 28 29 30 /* Define INT_MAX and LONG_MAX if not defined. Assuming 32 bits... */ 31 32 #ifndef INT_MAX 33 #define INT_MAX 0x7FFFFFFF 34 #endif 35 #ifndef LONG_MAX 36 #define LONG_MAX 0x7FFFFFFF 37 #endif 38 39 40 /* Define constants in some reasonable size. The next 4 constants are 41 POSIX constants. */ 42 43 #ifdef BC_BASE_MAX 44 /* <limits.h> on a POSIX.2 system may have defined these. Override. */ 45 # undef BC_BASE_MAX 46 # undef BC_SCALE_MAX 47 # undef BC_STRING_MAX 48 # undef BC_DIM_MAX 49 #endif 50 51 #define BC_BASE_MAX INT_MAX 52 #define BC_SCALE_MAX INT_MAX 53 #define BC_STRING_MAX INT_MAX 54 55 56 /* Definitions for arrays. */ 57 58 #define BC_DIM_MAX 65535 /* this should be NODE_SIZE^NODE_DEPTH-1 */ 59 60 #define NODE_SIZE 16 /* Must be a power of 2. */ 61 #define NODE_MASK 0xf /* Must be NODE_SIZE-1. */ 62 #define NODE_SHIFT 4 /* Number of 1 bits in NODE_MASK. */ 63 #define NODE_DEPTH 4 64 65 66 /* Other BC limits defined but not part of POSIX. */ 67 68 #define BC_LABEL_GROUP 64 69 #define BC_LABEL_LOG 6 70 #define BC_MAX_SEGS 16 /* Code segments. */ 71 #define BC_SEG_SIZE 1024 72 #define BC_SEG_LOG 10 73 74 /* Maximum number of variables, arrays and functions and the 75 allocation increment for the dynamic arrays. */ 76 77 #define MAX_STORE 32767 78 #define STORE_INCR 32 79 80 /* Other interesting constants. */ 81 82 #define FALSE 0 83 #define TRUE 1 84 85 /* for use with lookup (). */ 86 #define SIMPLE 0 87 #define ARRAY 1 88 #define FUNCT 2 89 #define FUNCTDEF 3 90 91 #define EXTERN extern 92 #ifdef __STDC__ 93 #define CONST const 94 #define VOID void 95 #else 96 #define CONST 97 #define VOID 98 #endif 99 100 /* Include the version definition. */ 101 #include "version.h" |