[unix-history] / usr / src / old / lib2648 / mat.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)mat.c	5.1 (Berkeley) %G%";
#endif not lint

/*
 * mat: retrieve the value in m[r, c].
 * rows and cols are the size of the matrix in all these routines.
 */

#include "bit.h"

int
mat(m, rows, cols, r, c)
register bitmat m;
register int c;
int rows, cols, r;
{
	register int thisbyte;

	thisbyte = m[r*((cols+7)>>3) + (c>>3)] & 0xff;
	thisbyte &= 0x80 >> (c&7);
	return (thisbyte != 0);
}
Commit	Line	Data
051b1e55 DF	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) %G%";
	9	#endif not lint
	10
7e33c93f RC	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	}