bitmap.h revision 20253 
1/*-
2 * Copyright (c) 1996 by David L. Nugent <davidn@blaze.net.au>.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer as
10 *    the first lines of this file unmodified.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 * 3. All advertising materials mentioning features or use of this software
15 *    must display the following acknowledgement:
16 *	This product includes software developed by David L. Nugent.
17 * 4. The name of the author may not be used to endorse or promote products
18 *    derived from this software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE DAVID L. NUGENT ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 *	$Id$
33 */
34
35#ifndef _BITMAP_H_
36#define _BITMAP_H_
37
38#include <sys/cdefs.h>
39
40struct bitmap
41{
42	int	      size;
43	unsigned char *map;
44};
45
46__BEGIN_DECLS
47struct bitmap bm_alloc __P((int size));
48void bm_dealloc __P((struct bitmap * bm));
49void bm_setbit __P((struct bitmap * bm, int pos));
50void bm_clrbit __P((struct bitmap * bm, int pos));
51int bm_isset __P((struct bitmap * bm, int pos));
52int bm_firstunset __P((struct bitmap * bm));
53int bm_lastset __P((struct bitmap * bm));
54__END_DECLS
55
56#endif				/* !_BITMAP_H */
57