/*	VC	A Table Calculator

 *		Common definitions

 *

 *		original by James Gosling, September 1982

 *		modified by Mark Weiser and Bruce Israel,

 *			University of Maryland

 *

 */



#include<stdio.h>



#ifdef MCH_AMIGA

#define ROWS	23

#define COLS	79

#else

#define ROWS	24

#define COLS	80

#endif



#ifdef DECLARE

#define dec

#else

#define dec extern

#endif



#define MAXROWS 200

#define MAXCOLS 40



struct ent {

    double v;

    char *label;

    struct enode *expr;

    short flags;

    short row, col;

    struct ent *next;

};





struct enode {

    int op;

    union {

	double k;

	struct ent *v;

	struct {

	    struct enode *left, *right;

	} o;

    } e;

};



/* op values */

#define O_VAR 'v'

#define O_CONST 'k'

#define O_REDUCE(c) (c+0200)



/* flag values */

#define is_valid     0001

#define is_changed   0002

#define is_lchanged  0004

#define is_leftflush 0010

#define is_deleted   0020



#define ctl(c) ('c'&037)



dec struct ent *tbl[MAXROWS][MAXCOLS];



dec int strow, stcol;

dec int currow, curcol;

dec int savedrow, savedcol;

dec int FullUpdate;

dec int maxrow, maxcol;

dec int fwidth[MAXCOLS];

dec int precision[MAXCOLS];

dec char hidden_col[MAXCOLS];

dec char hidden_row[MAXROWS];

dec char line[1000];

dec int linelim;

dec int changed;

dec struct ent *to_fix;

dec struct enode *new();

dec struct ent *lookat();

dec struct enode *copye();

dec char *coltoa();



dec int modflg;