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/* @(#)extern.h 1.9 89/11/01
*
* Contains the external variable definitions used by calctool.
*
* Copyright (c) Rich Burridge.
* Sun Microsystems, Australia - All rights reserved.
*
* Permission is given to distribute these sources, as long as the
* copyright messages are not removed, and no monies are exchanged.
*
* No responsibility is taken for any errors or inaccuracies inherent
* either to the comments or the code of this program, but if
* reported to me then an attempt will be made to fix them.
*/
extern char *make_fixed(), *make_number(), *make_scientific() ;
extern char base_str[4][4] ; /* Strings for each base value. */
extern char con_names[MAXREGS][MAXLINE] ; /* .calctoolrc constant names. */
extern char cur_op ; /* Current arithmetic operation. */
extern char current ; /* Current button or character pressed. */
extern char digits[] ; /* Valid numerical digits. */
extern char display[] ; /* Current calculator display. */
extern char dtype_str[2][4] ; /* Strings for each display mode value. */
extern char *exp_posn ; /* Position of the exponent sign. */
extern char fnum[] ; /* Scratch area for fixed point numbers. */
extern char fun_names[MAXREGS][MAXLINE] ; /* .calctoolrc function names. */
extern char fun_vals[MAXREGS][MAXLINE] ; /* .calctoolrc function defs. */
extern char geometry[] ; /* X11 geometry information. */
extern char helpname[] ; /* Filename for helpfile. */
extern char num_names[MAXREGS][2] ; /* Used by the popup menus. */
extern char old_cal_value ; /* Previous calculation operator. */
extern char progname[] ; /* Name of this program. */
extern char pstr[] ; /* Current button text string. */
extern char revtable[] ; /* Table for reversing the bits in a byte. */
extern char *selection ; /* Current [Get] selection. */
extern char *shelf ; /* PUT selection shelf contents. */
extern char snum[] ; /* Scratch are for scientific numbers. */
extern char ttype_str[3][5] ; /* Strings for each trig type value. */
extern char validkeys[] ; /* Valid keys after an error condition. */
extern char validmenu[] ; /* Valid keys with popup menus. */
extern char x11_display[] ; /* X11 display information. */
extern double convert_display() ;
extern double con_vals[] ; /* Selectable constants. */
extern double disp_val ; /* Value of the current display. */
extern double exp_p1[10][4] ;
extern double last_input ; /* Previous number input by user. */
extern double max_fix[] ; /* Maximum showable fixed values. */
extern double mem_vals[] ; /* Memory register values. */
extern double powers[11][4] ; /* Table of power values for each base. */
extern double result ; /* Current calculator total value. */
extern double tresults[] ; /* Current trigonometric results. */
extern enum base_type base ; /* Current base: BIN, OCT, DEC or HEX. */
extern enum gr_type gtype ; /* What graphics system is being used. */
extern enum num_type dtype ; /* Number display mode. */
extern enum trig_type ttype ; /* Trigonometric type (deg, grad or rad). */
extern int accuracy ; /* Number of digits precision (Max 9). */
extern int basevals[] ; /* Supported arithmetic bases. */
extern int chxoff[] ; /* X offset for various length button strings. */
extern int color ; /* Color used for current raster operation. */
extern int column ; /* Column number of current key/mouse press. */
extern int cur_ch ; /* Current character if keyboard event. */
extern int curx ; /* Current mouse X position. */
extern int cury ; /* Current mouse Y position. */
extern int disp_length[] ; /* Display length in characters for each base. */
extern int down ; /* Indicates if mouse button is down. */
extern int error ; /* Indicates some kind of display error. */
extern int hyperbolic ; /* If set, trig functions will be hyperbolic. */
extern int iconic ; /* Set if window is currently iconic. */
extern int inv_video ; /* Set if user wants inverse video mode. */
extern int inverse ; /* If set, trig & log functions will be inversed. */
extern int iscolor ; /* Set if this is a color screen. */
extern int ishelp ; /* Set if there is a help file. */
extern int issel ; /* Set if valid [Get] selection. */
extern int ix ; /* Initial X position of the icon. */
extern int iy ; /* Initial Y position of the icon. */
extern int key_exp ; /* Set if entering exponent number. */
extern int new_input ; /* New number input since last op. */
extern int nextc ; /* Current event identifier. */
extern int nfont_width ; /* Width of the normal font characters. */
extern int pending ; /* Set for command with on multiple presses. */
extern int pending_op ; /* Arithmetic operation for pending command. */
extern int pointed ; /* Whether a decimal point has been given. */
extern int portion ; /* Button portion on current key/mouse press. */
extern int posspec ; /* Set if -Wp or -g option is present (for X11) */
extern int row ; /* Row number of current key/mouse press. */
extern int rstate ; /* Is memory register frame displayed? */
extern int signgam ;
extern int spaces ; /* Number of spaces in current button string. */
extern int toclear ; /* Indicates if display should be cleared. */
extern int tstate ; /* Current button set being displayed. */
extern int wx ; /* Initial X position of the window. */
extern int wy ; /* Initial Y position of the window. */
extern int x ; /* X offset for text for button. */
extern int y ; /* Y offset for text for button. */
extern FILE *hfd ; /* File descriptor for help information. */
extern struct iteminfo items[] ; /* Panel items. */
extern struct button buttons[] ; /* Calculator button values. */
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