2 * Copyright (c) 2004, 2007 Todd C. Miller <Todd.Miller@courtesan.com>
4 * Permission to use, copy, modify, and distribute this software for any
5 * purpose with or without fee is hereby granted, provided that the above
6 * copyright notice and this permission notice appear in all copies.
8 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
16 * $Sudo: redblack.h,v 1.4 2008/11/09 14:13:12 millert Exp $
19 #ifndef _SUDO_REDBLACK_H
20 #define _SUDO_REDBLACK_H
34 struct rbnode *left, *right, *parent;
40 int (*compar) __P((const void *, const void *));
45 #define rbapply(t, f, c, o) rbapply_node((t), (t)->root.left, (f), (c), (o))
46 #define rbisempty(t) ((t)->root.left == &(t)->nil && (t)->root.right == &(t)->nil)
47 #define rbfirst(t) ((t)->root.left)
48 #define rbroot(t) (&(t)->root)
49 #define rbnil(t) (&(t)->nil)
51 void *rbdelete __P((struct rbtree *, struct rbnode *));
52 int rbapply_node __P((struct rbtree *, struct rbnode *,
53 int (*)(void *, void *), void *,
55 struct rbnode *rbfind __P((struct rbtree *, void *));
56 struct rbnode *rbinsert __P((struct rbtree *, void *));
57 struct rbtree *rbcreate __P((int (*)(const void *, const void *)));
58 void rbdestroy __P((struct rbtree *, void (*)(void *)));
60 #endif /* _SUDO_REDBLACK_H */