4.3BSD - /usr/src/usr.lib/lib2648/mat.c

   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: 
   7: #ifndef lint
   8: static char sccsid[] = "@(#)mat.c	5.1 (Berkeley) 4/30/85";
   9: #endif not lint
  10: 
  11: /*
  12:  * mat: retrieve the value in m[r, c].
  13:  * rows and cols are the size of the matrix in all these routines.
  14:  */
  15: 
  16: #include "bit.h"
  17: 
  18: int
  19: mat(m, rows, cols, r, c)
  20: register bitmat m;
  21: register int c;
  22: int rows, cols, r;
  23: {
  24:     register int thisbyte;
  25: 
  26:     thisbyte = m[r*((cols+7)>>3) + (c>>3)] & 0xff;
  27:     thisbyte &= 0x80 >> (c&7);
  28:     return (thisbyte != 0);
  29: }

Defined functions

Defined variables