search.h revision 62780 
1/*	$NetBSD: search.h,v 1.12 1999/02/22 10:34:28 christos Exp $	*/
2/* $FreeBSD: head/include/search.h 62780 2000-07-07 16:52:24Z alfred $ */
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/ansi.h>
14
15#ifdef	_BSD_SIZE_T_
16typedef	_BSD_SIZE_T_	size_t;
17#undef	_BSD_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#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 __P((size_t));
45void	 hdestroy __P((void));
46ENTRY	*hsearch __P((ENTRY, ACTION));
47void	*tdelete __P((const void *, void **,
48		      int (*)(const void *, const void *)));
49void	*tfind __P((const void *, void **,
50		      int (*)(const void *, const void *)));
51void	*tsearch __P((const void *, void **,
52		      int (*)(const void *, const void *)));
53void      twalk __P((const void *, void (*)(const void *, VISIT, int)));
54__END_DECLS
55
56#endif /* !_SEARCH_H_ */
57