search.h revision 308091 
1/*-
2 * Written by J.T. Conklin <jtc@netbsd.org>
3 * Public domain.
4 *
5 *	$NetBSD: search.h,v 1.12 1999/02/22 10:34:28 christos Exp $
6 * $FreeBSD: stable/10/include/search.h 308091 2016-10-29 15:04:24Z ed $
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
42struct que_elem {
43	struct que_elem *next;
44	struct que_elem *prev;
45};
46#else
47typedef void posix_tnode;
48#endif
49
50__BEGIN_DECLS
51int	 hcreate(size_t);
52void	 hdestroy(void);
53ENTRY	*hsearch(ENTRY, ACTION);
54void	 insque(void *, void *);
55void	*lfind(const void *, const void *, size_t *, size_t,
56	    int (*)(const void *, const void *));
57void	*lsearch(const void *, void *, size_t *, size_t,
58	    int (*)(const void *, const void *));
59void	 remque(void *);
60void	*tdelete(const void * __restrict, void ** __restrict,
61	    int (*)(const void *, const void *));
62void	*tfind(const void *, void * const *,
63	    int (*)(const void *, const void *));
64void	*tsearch(const void *, void **, int (*)(const void *, const void *));
65void	 twalk(const void *, void (*)(const void *, VISIT, int));
66__END_DECLS
67
68#endif /* !_SEARCH_H_ */
69