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/* $OpenBSD: tree.h,v 1.3 1998/05/22 00:47:49 millert Exp $ */
/* tree.h - declare structures used by tree library
*
* vix 22jan93 [revisited; uses RCS, ANSI, POSIX; has bug fixes]
* vix 27jun86 [broken out of tree.c]
*
* $From: tree.h,v 8.1 1994/12/15 06:24:14 vixie Exp $
*/
#ifndef _TREE_H_INCLUDED
#define _TREE_H_INCLUDED
#ifndef __P
# if defined(__STDC__) || defined(__GNUC__)
# define __P(x) x
# else
# define __P(x) ()
# endif
#endif
/*
* tree_t is our package-specific anonymous pointer.
*/
#if defined(__STDC__) || defined(__GNUC__)
typedef void *tree_t;
#else
typedef char *tree_t;
#endif
typedef struct tree_s {
tree_t data;
struct tree_s *left, *right;
short bal;
}
tree;
void tree_init __P((tree **));
tree_t tree_srch __P((tree **, int (*)(), tree_t));
tree_t tree_add __P((tree **, int (*)(), tree_t, void (*)()));
int tree_delete __P((tree **, int (*)(), tree_t, void (*)()));
int tree_trav __P((tree **, int (*)()));
void tree_mung __P((tree **, void (*)()));
#endif /* _TREE_H_INCLUDED */
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