search.h revision 102227 
1/*	$NetBSD: search.h,v 1.12 1999/02/22 10:34:28 christos Exp $	*/
2/* $FreeBSD: head/include/search.h 102227 2002-08-21 16:20:02Z mike $ */
3
4/*
5 * Written by J.T. Conklin <jtc@netbsd.org>
6 * Public domain.
7 */
8
9#ifndef _SEARCH_H_
10#define _SEARCH_H_
11
12#include <sys/cdefs.h>
13#include <sys/_types.h>
14
15#ifndef _SIZE_T_DECLARED
16typedef	__size_t	size_t;
17#define	_SIZE_T_DECLARED
18#endif
19
20typedef struct entry {
21	char *key;
22	void *data;
23} ENTRY;
24
25typedef enum {
26	FIND, ENTER
27} ACTION;
28
29typedef enum {
30	preorder,
31	postorder,
32	endorder,
33	leaf
34} VISIT;
35
36#ifdef _SEARCH_PRIVATE
37typedef struct node {
38	char         *key;
39	struct node  *llink, *rlink;
40} node_t;
41#endif
42
43__BEGIN_DECLS
44int	 hcreate(size_t);
45void	 hdestroy(void);
46ENTRY	*hsearch(ENTRY, ACTION);
47void	*tdelete(const void *__restrict, void **__restrict,
48	    int (*)(const void *, const void *));
49void	*tfind(const void *, void **, int (*)(const void *, const void *));
50void	*tsearch(const void *, void **, int (*)(const void *, const void *));
51void      twalk(const void *, void (*)(const void *, VISIT, int));
52__END_DECLS
53
54#endif /* !_SEARCH_H_ */
55