gcalctool/calctool.h

   1
   2 /*  $Header$
   3  *
   4  *  Copyright (c) 1987-2008 Sun Microsystems, Inc. All Rights Reserved.
   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, or (at your option)
   9  *  any later version.
  10  *
  11  *  This program is distributed in the hope that it will be useful, but
  12  *  WITHOUT ANY WARRANTY; without even the implied warranty of
  13  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14  *  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; if not, write to the Free Software
  18  *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19  *  02111-1307, USA.
  20  */
  21
  22 #ifndef CALCTOOL_H
  23 #define CALCTOOL_H
  24
  25 #include "config.h"
  26 #include "mp.h"
  27
  28 #include <string.h>
  29 #include <unistd.h>
  30 #include <stdlib.h>
  31 #include <locale.h>
  32 #include <math.h>
  33 #include <glib/gi18n.h>
  34 #include <gtk/gtk.h>
  35
  36 #define FCLOSE       (void) fclose     /* To make lint happy. */
  37 #define FPRINTF      (void) fprintf
  38 #define FPUTS        (void) fputs
  39 #define GETHOSTNAME  (void) gethostname
  40 #define MEMCPY       (void) memcpy
  41 #define MEMSET       (void) memset
  42 #define MKSTEMP      (void) mkstemp
  43 #define REWIND       (void) rewind
  44 #define SNPRINTF     (void) snprintf
  45 #define SSCANF       (void) sscanf
  46 #define STRCAT       (void) strcat
  47 #define STRNCPY      (void) strncpy
  48 #define STRNCAT      (void) strncat
  49 #define UNLINK       (void) unlink
  50
  51 /* Base definitions. */
  52 enum base_type { BIN, OCT, DEC, HEX, MAXBASES };
  53
  54 /* Calculator modes. */
  55 enum mode_type { BASIC, ADVANCED, FINANCIAL, SCIENTIFIC, MAXMODES };
  56
  57 /* Number display mode. */
  58 enum num_type { ENG, FIX, SCI, MAXDISPMODES };
  59
  60 /* Trigonometric types. */
  61 enum trig_type { DEG, GRAD, RAD, MAXTRIGMODES };
  62
  63 /* Syntax mode. */
  64 enum syntax {
  65     NPA = 0,      /* Non-precedence arithmetic */
  66     EXPRS,        /* Expression with arithmetic precedence */
  67     MAXSYNTAX
  68 };
  69
  70 /* Abbreviations for the gcalctool keyboard */
  71 enum
  72 {
  73     KEY_0, KEY_1, KEY_2, KEY_3,
  74     KEY_4, KEY_5, KEY_6, KEY_7,
  75     KEY_8, KEY_9, KEY_A, KEY_B,
  76     KEY_C, KEY_D, KEY_E, KEY_F,
  77     KEY_NUMERIC_POINT,
  78     KEY_CALCULATE,
  79     KEY_CLEAR, KEY_CLEAR_ENTRY,
  80     KEY_START_BLOCK, KEY_END_BLOCK,
  81     KEY_ADD, KEY_SUBTRACT,
  82     KEY_MULTIPLY, KEY_DIVIDE,
  83     KEY_BACKSPACE,
  84     KEY_DELETE,
  85     KEY_CHANGE_SIGN,
  86     KEY_INTEGER,
  87     KEY_FRACTION,
  88     KEY_PERCENTAGE,
  89     KEY_SQUARE,
  90     KEY_SQUARE_ROOT,
  91     KEY_RECIPROCAL,
  92     KEY_E_POW_X,
  93     KEY_10_POW_X,
  94     KEY_X_POW_Y,
  95     KEY_FACTORIAL,
  96     KEY_RANDOM,
  97     KEY_SIN, KEY_SINH, KEY_ASIN, KEY_ASINH,
  98     KEY_COS, KEY_COSH, KEY_ACOS, KEY_ACOSH,
  99     KEY_TAN, KEY_TANH, KEY_ATAN, KEY_ATANH,
 100     KEY_NATURAL_LOGARITHM,
 101     KEY_LOGARITHM,
 102     KEY_LOGARITHM2,
 103     KEY_ABSOLUTE_VALUE,
 104     KEY_MASK_16,
 105     KEY_MASK_32,
 106     KEY_MODULUS_DIVIDE,
 107     KEY_EXPONENTIAL,
 108     KEY_NOT, KEY_OR, KEY_AND, KEY_XOR, KEY_XNOR,
 109     KEY_FINC_CTRM,
 110     KEY_FINC_DDB,
 111     KEY_FINC_FV,
 112     KEY_FINC_PMT,
 113     KEY_FINC_PV,
 114     KEY_FINC_RATE,
 115     KEY_FINC_SLN,
 116     KEY_FINC_SYD,
 117     KEY_FINC_TERM,
 118     KEY_SHIFT,
 119     KEY_STORE, KEY_RECALL, KEY_EXCHANGE,
 120     KEY_SET_ACCURACY,
 121     KEY_CONSTANT,
 122     KEY_FUNCTION,
 123     NKEYS
 124 };
 125
 126 #ifndef LINT_CAST
 127 #ifdef  lint
 128 #define LINT_CAST(arg)  (arg ? 0 : 0)
 129 #else
 130 #define LINT_CAST(arg)  (arg)
 131 #endif /*lint*/
 132 #endif /*LINT_CAST*/
 133
 134 #define MAX_DIGITS     200         /* Maximum displayable number of digits. */
 135 #define MAX_LOCALIZED  (MAX_DIGITS * (1 + MB_LEN_MAX) + MB_LEN_MAX)
 136
 137 #define DEFAULT_ACCURACY 9
 138
 139 #ifndef MAXLINE
 140 #define MAXLINE        512        /* Length of character strings. */
 141 #endif /*MAXLINE*/
 142
 143 #define MAXACC         99         /* Max. number of digits after numeric point. */
 144
 145 #define MAX_CONSTANTS 10
 146 #define MAX_FUNCTIONS 10
 147 #define MAX_REGISTERS 10         /* Maximum number of memory registers. */
 148 #define MAXBITCALC     2          /* Choices for bitcalculating */
 149
 150 #ifndef MIN
 151 #define MIN(x,y)       ((x) < (y) ? (x) : (y))
 152 #endif /*MIN*/
 153
 154 #ifndef RCNAME
 155 #define RCNAME         ".gcalctoolrc"
 156 #endif /*RCNAME*/
 157
 158 #undef TRUE                    /* Boolean definitions. */
 159 #define TRUE           1
 160
 161 #undef FALSE
 162 #define FALSE          0
 163
 164 #define UNDO_HISTORY_LENGTH 16  /* Arithmetic mode undo history length */
 165
 166 #define MPMATH_ERR                      20001
 167
 168 enum button_flags {
 169     NUMBER       = (1 << 3),   /* Number button */
 170     FUNC         = (1 << 6),   /* Function */
 171     POSTFIXOP    = (1 << 14),  /* Unary postfix operation */
 172     PREFIXOP     = (1 << 15),  /* Unary prefix operation */
 173 };
 174
 175 struct button {
 176     int id;
 177     char *symname;           /* Expression function name */
 178     void (*func)();          /* Function to obey on button press. */
 179     enum button_flags flags; /* Misc flags */
 180 };
 181
 182 /* Expression mode state */
 183 struct exprm_state {
 184     int ans[MP_SIZE];      /* Previously calculated answer */
 185     char *expression;      /* Expression entered by user */
 186     int cursor;
 187     int clear;             /* Clear command issued */
 188 };
 189
 190 /* Circular list of Arithmetic Precedence Mode states*/
 191 struct exprm_state_history {
 192   unsigned int begin;
 193   unsigned int end;
 194   unsigned int current;
 195   struct exprm_state e[UNDO_HISTORY_LENGTH];  /* Expression mode state */
 196 };
 197
 198 struct calcVars {                      /* Calctool variables and options. */
 199     struct exprm_state_history h;      /* History of expression mode states */
 200
 201     int current;                       /* Current button/character pressed. */
 202
 203     char *appname;                     /* Application name for resources. */
 204     char *home;                        /* Pathname for users home directory. */
 205     char *progname;                    /* Name of this program. */
 206
 207     char display[MAXLINE];             /* Current calculator display. */
 208     char *exp_posn;                    /* Position of the exponent sign. */
 209     char fnum[MAX_LOCALIZED];          /* Scratchpad for fixed numbers. */
 210     const char *radix;                 /* Locale specific radix string. */
 211     char *shelf;                       /* PUT selection shelf contents. */
 212     char snum[MAX_LOCALIZED];          /* Scratchpad for scientific numbers. */
 213     const char *tsep;                  /* Locale specific thousands separator. */
 214     int tsep_count;                    /* Number of digits between separator. */
 215
 216     char fun_names[MAX_FUNCTIONS][MAXLINE];  /* Function names from .gcalctoolcf. */
 217     char fun_vals[MAX_FUNCTIONS][MAXLINE];   /* Function defs from .gcalctoolcf. */
 218     char con_names[MAX_CONSTANTS][MAXLINE];  /* Selectable constant names. */
 219     int MPcon_vals[MAX_CONSTANTS][MP_SIZE];  /* Selectable constants. */
 220
 221     int MPdebug;                       /* If set, debug info. to stderr. */
 222     int MPerrors;                      /* If set, output errors to stderr. */
 223     int MPdisp_val[MP_SIZE];           /* Value of the current display. */
 224     int MPexpr_val[MP_SIZE];           /* Value of the current expression. */
 225     int MPlast_input[MP_SIZE];         /* Previous number input by user. */
 226     int MPmvals[MAX_REGISTERS][MP_SIZE];     /* Memory register values. */
 227     int MPresult[MP_SIZE];             /* Current calculator total value. */
 228     int MPimresult[MP_SIZE];           /* Current intermediate result. */
 229     int MPtresults[3][MP_SIZE];        /* Current trigonometric results. */
 230
 231     enum base_type base;            /* Current base: BIN, OCT, DEC or HEX. */
 232     enum mode_type modetype;        /* Current calculator mode. */
 233     enum num_type dtype;            /* Number display mode. */
 234     enum trig_type ttype;           /* Trig. type (deg, grad or rad). */
 235
 236     enum syntax syntax;             /* Calculation syntax mode */
 237
 238     int accuracy;      /* Number of digits precision (Max 9). */
 239     int cur_op;        /* Current arithmetic operation. */
 240     int error;         /* Indicates some kind of display error. */
 241     int math_error;    /* Math error (used in expression mode) */
 242     int key_exp;       /* Set if entering exponent number. */
 243     int new_input;     /* New number input since last op. */
 244     int noparens;      /* Count of left brackets still to be matched. */
 245     int numsptr;       /* Pointer into the parenthese numeric stack. */
 246     int old_cal_value; /* Previous calculation operator. */
 247     int pointed;       /* Whether a decimal point has been given. */
 248     int show_paren;    /* Set if we wish to show DISPLAYITEM during parens. */
 249     int show_tsep;     /* Set if the thousands separator should be shown. */
 250     int show_zeroes;   /* Set if trailing zeroes should be shown. */
 251     int toclear;       /* Indicates if display should be cleared. */
 252 };
 253
 254 typedef struct calcVars *Vars;
 255
 256 extern Vars v;                 /* Calctool variables and options. */
 257 extern int basevals[];         /* Supported arithmetic bases. */
 258 extern struct button buttons[];         /* Calculator button values. */
 259
 260 void doerr(char *);
 261
 262 #endif /*CALCTOOL_H*/