usr.sbin/pw/bitmap.h

   1 /*-
   2  * Copyright (C) 1996
   3  *      David L. Nugent.  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.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/usr.sbin/pw/bitmap.h,v 1.5 2002/07/11 19:07:35 alfred Exp $
  27  */
  28
  29 #ifndef _BITMAP_H_
  30 #define _BITMAP_H_
  31
  32 #include <sys/cdefs.h>
  33
  34 struct bitmap
  35 {
  36         int           size;
  37         unsigned char *map;
  38 };
  39
  40 __BEGIN_DECLS
  41 struct bitmap bm_alloc(int size);
  42 void bm_dealloc(struct bitmap * bm);
  43 void bm_setbit(struct bitmap * bm, int pos);
  44 void bm_clrbit(struct bitmap * bm, int pos);
  45 int bm_isset(struct bitmap * bm, int pos);
  46 int bm_firstunset(struct bitmap * bm);
  47 int bm_lastset(struct bitmap * bm);
  48 __END_DECLS
  49
  50 #endif                          /* !_BITMAP_H */