4.3BSD - /usr/src/usr.lib/libplot/dumb/dumb.h

   1: /*
   2:  * Copyright (c) 1980 Regents of the University of California.
   3:  * All rights reserved.  The Berkeley software License Agreement
   4:  * specifies the terms and conditions for redistribution.
   5:  *
   6:  *	@(#)dumb.h	5.1 (Berkeley) 5/7/85
   7:  *
   8:  *
   9:  * This accepts plot file formats and produces the appropriate plots
  10:  * for dumb terminals.  It can also be used for printing terminals and
  11:  * lineprinter listings, although there is no way to specify number of
  12:  * lines and columns different from your terminal.  This would be easy
  13:  * to change, and is left as an exercise for the reader.
  14:  */
  15: 
  16: #include <math.h>
  17: 
  18: #define scale(x,y) y = LINES-1-(LINES*y/rangeY +minY); x = COLS*x/rangeX + minX
  19: 
  20: extern int minX, rangeX;    /* min and range of x */
  21: extern int minY, rangeY;    /* min and range of y */
  22: extern int currentx, currenty;
  23: extern int COLS, LINES;
  24: 
  25: /* A very large screen! (probably should use malloc) */
  26: #define MAXCOLS     132
  27: #define MAXLINES    90
  28: 
  29: extern char screenmat[MAXCOLS][MAXLINES];

Defined macros

Usage of this include