/*
avl_tree.h -- header file for avl_tree.c
Copyright (C) 1998 Michael H. Buselli
- 2000,2001 Ivo Timmermans <ivo@o2w.nl>,
- 2000,2001 Guus Sliepen <guus@sliepen.eu.org>
- 2000,2001 Wessel Dankers <wsl@nl.linux.org>
+ 2000-2003 Ivo Timmermans <ivo@o2w.nl>,
+ 2000-2003 Guus Sliepen <guus@sliepen.eu.org>
+ 2000-2003 Wessel Dankers <wsl@nl.linux.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
library for inclusion into tinc (http://tinc.nl.linux.org/) by
Guus Sliepen <guus@sliepen.eu.org>.
- $Id: avl_tree.h,v 1.1.2.6 2002/09/09 21:49:16 guus Exp $
+ $Id: avl_tree.h,v 1.1.2.10 2003/07/24 12:08:15 guus Exp $
*/
} avl_node_t;
-typedef int (*avl_compare_t) (const void *, const void *);
-typedef void (*avl_action_t) (const void *);
-typedef void (*avl_action_node_t) (const avl_node_t *);
+typedef int (*avl_compare_t)(const void *, const void *);
+typedef void (*avl_action_t)(const void *);
+typedef void (*avl_action_node_t)(const avl_node_t *);
typedef struct avl_tree_t {
extern void avl_free_tree(avl_tree_t *);
extern avl_node_t *avl_alloc_node(void);
-extern void avl_free_node(avl_tree_t * tree, avl_node_t *);
+extern void avl_free_node(avl_tree_t *tree, avl_node_t *);
/* Insertion and deletion */
extern void avl_insert_after(avl_tree_t *, avl_node_t *, avl_node_t *);
extern avl_node_t *avl_unlink(avl_tree_t *, void *);
-extern void avl_unlink_node(avl_tree_t * tree, avl_node_t *);
+extern void avl_unlink_node(avl_tree_t *tree, avl_node_t *);
extern void avl_delete(avl_tree_t *, void *);
extern void avl_delete_node(avl_tree_t *, avl_node_t *);
/* Tree walking */
-extern void avl_foreach(avl_tree_t *, avl_action_t);
-extern void avl_foreach_node(avl_tree_t *, avl_action_t);
+extern void avl_foreach(const avl_tree_t *, avl_action_t);
+extern void avl_foreach_node(const avl_tree_t *, avl_action_t);
/* Indexing */
#ifdef AVL_COUNT
-extern unsigned int avl_count(avl_tree_t *);
+extern unsigned int avl_count(const avl_tree_t *);
extern avl_node_t *avl_get_node(const avl_tree_t *, unsigned int);
extern unsigned int avl_index(const avl_node_t *);
#endif
#ifdef AVL_DEPTH
-extern unsigned int avl_depth(avl_tree_t *);
+extern unsigned int avl_depth(const avl_tree_t *);
#endif
#endif /* __AVL_TREE_H__ */