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102 lines
2.7 KiB
C
102 lines
2.7 KiB
C
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/* const.h: Constants for bc. */
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/* This file is part of GNU bc.
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Copyright (C) 1991, 1992, 1993, 1994, 1997 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License , or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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You may contact the author by:
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e-mail: phil@cs.wwu.edu
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us-mail: Philip A. Nelson
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Computer Science Department, 9062
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Western Washington University
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Bellingham, WA 98226-9062
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*************************************************************************/
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/* Define INT_MAX and LONG_MAX if not defined. Assuming 32 bits... */
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#ifndef INT_MAX
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#define INT_MAX 0x7FFFFFFF
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#endif
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#ifndef LONG_MAX
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#define LONG_MAX 0x7FFFFFFF
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#endif
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/* Define constants in some reasonable size. The next 4 constants are
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POSIX constants. */
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#ifdef BC_BASE_MAX
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/* <limits.h> on a POSIX.2 system may have defined these. Override. */
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# undef BC_BASE_MAX
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# undef BC_SCALE_MAX
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# undef BC_STRING_MAX
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# undef BC_DIM_MAX
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#endif
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#define BC_BASE_MAX INT_MAX
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#define BC_SCALE_MAX INT_MAX
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#define BC_STRING_MAX INT_MAX
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/* Definitions for arrays. */
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#define BC_DIM_MAX 65535 /* this should be NODE_SIZE^NODE_DEPTH-1 */
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#define NODE_SIZE 16 /* Must be a power of 2. */
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#define NODE_MASK 0xf /* Must be NODE_SIZE-1. */
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#define NODE_SHIFT 4 /* Number of 1 bits in NODE_MASK. */
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#define NODE_DEPTH 4
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/* Other BC limits defined but not part of POSIX. */
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#define BC_LABEL_GROUP 64
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#define BC_LABEL_LOG 6
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#define BC_MAX_SEGS 16 /* Code segments. */
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#define BC_SEG_SIZE 1024
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#define BC_SEG_LOG 10
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/* Maximum number of variables, arrays and functions and the
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allocation increment for the dynamic arrays. */
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#define MAX_STORE 32767
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#define STORE_INCR 32
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/* Other interesting constants. */
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#define FALSE 0
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#define TRUE 1
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/* for use with lookup (). */
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#define SIMPLE 0
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#define ARRAY 1
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#define FUNCT 2
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#define FUNCTDEF 3
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#define EXTERN extern
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#ifdef __STDC__
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#define CONST const
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#define VOID void
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#else
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#define CONST
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#define VOID
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#endif
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/* Include the version definition. */
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#include "version.h"
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