1/*	$OpenBSD: search.h,v 1.10 2014/07/18 04:16:09 matthew Exp $	*/
2/*	$NetBSD: search.h,v 1.9 1995/08/08 21:14:45 jtc Exp $	*/
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 <machine/_types.h>
14
15#ifndef	_SIZE_T_DEFINED_
16#define	_SIZE_T_DEFINED_
17typedef	__size_t	size_t;
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__BEGIN_DECLS
37int	 hcreate(size_t);
38void	 hdestroy(void);
39ENTRY	*hsearch(ENTRY, ACTION);
40
41void	*lfind(const void *, const void *, size_t *, size_t,
42	    int (*)(const void *, const void *));
43void	*lsearch(const void *, void *, size_t *, size_t,
44	    int (*)(const void *, const void *));
45void	 insque(void *, void *);
46void	 remque(void *);
47
48void	*tdelete(const void * __restrict, void ** __restrict,
49	    int (*)(const void *, const void *));
50void	*tfind(const void *, void * const *,
51	    int (*)(const void *, const void *));
52void	*tsearch(const void *, void **,
53	    int (*)(const void *, const void *));
54void      twalk(const void *, void (*)(const void *, VISIT, int));
55__END_DECLS
56
57#endif /* !_SEARCH_H_ */
58