gnu/dist/bc/h/const.h

   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"