xref: /freebsd/include/search.h (revision 7bd26d456798a75b02f0db0d62564a5672a9e1c0)
1 /*-
2  * Written by J.T. Conklin <jtc@NetBSD.org>
3  * Public domain.
4  *
5  *	$NetBSD: search.h,v 1.18 2005/07/06 15:47:15 drochner Exp $
6  * $FreeBSD$
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
16 typedef	__size_t	size_t;
17 #define	_SIZE_T_DECLARED
18 #endif
19 
20 typedef	struct entry {
21 	char	*key;
22 	void	*data;
23 } ENTRY;
24 
25 typedef	enum {
26 	FIND, ENTER
27 } ACTION;
28 
29 typedef	enum {
30 	preorder,
31 	postorder,
32 	endorder,
33 	leaf
34 } VISIT;
35 
36 #ifdef _SEARCH_PRIVATE
37 typedef	struct node {
38 	char         *key;
39 	struct node  *llink, *rlink;
40 } node_t;
41 
42 struct que_elem {
43 	struct que_elem *next;
44 	struct que_elem *prev;
45 };
46 #endif
47 
48 __BEGIN_DECLS
49 int	 hcreate(size_t);
50 void	 hdestroy(void);
51 ENTRY	*hsearch(ENTRY, ACTION);
52 
53 void	*lfind(const void *, const void *, size_t *, size_t,
54 	    int (*)(const void *, const void *));
55 void	*lsearch(const void *, void *, size_t *, size_t,
56 	    int (*)(const void *, const void *));
57 void	 insque(void *, void *);
58 void	 remque(void *);
59 
60 void	*tdelete(const void * __restrict, void ** __restrict,
61 	    int (*)(const void *, const void *));
62 void	*tfind(const void *, void * const *,
63 	    int (*)(const void *, const void *));
64 void	*tsearch(const void *, void **, int (*)(const void *, const void *));
65 void	 twalk(const void *, void (*)(const void *, VISIT, int));
66 __END_DECLS
67 
68 #endif /* !_SEARCH_H_ */
69