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/*      $NetBSD: search.h,v 1.12 1999/02/22 10:34:28 christos Exp $     */

/* $FreeBSD: src/include/search.h,v 1.4 2002/03/23 17:24:53 imp Exp $ */

/*

 * Written by J.T. Conklin <jtc@netbsd.org>

 * Public domain.

 */

#ifndef _SEARCH_H_

#define _SEARCH_H_

#include <sys/cdefs.h>

#include <machine/ansi.h>

#include <sys/types.h>

typedef struct entry {

        char *key;

        void *data;

} ENTRY;

typedef enum {

        FIND, ENTER

} ACTION;

typedef enum {

        preorder,

        postorder,

        endorder,

        leaf

} VISIT;

#ifdef _SEARCH_PRIVATE

typedef struct node {

        char         *key;

        struct node  *llink, *rlink;

} node_t;

#endif

struct hsearch_data

{

  struct internal_head *htable;

  size_t htablesize;

};

__BEGIN_DECLS

int      hcreate(size_t);

void     hdestroy(void);

ENTRY   *hsearch(ENTRY, ACTION);

int      hcreate_r(size_t, struct hsearch_data *);

void     hdestroy_r(struct hsearch_data *);

int     hsearch_r(ENTRY, ACTION, ENTRY **, struct hsearch_data *);

void    *tdelete(const void *, void **, int (*)(const void *, const void *));

void    tdestroy (void *, void (*)(void *));

void    *tfind(const void *, void **, int (*)(const void *, const void *));

void    *tsearch(const void *, void **, int (*)(const void *, const void *));

void      twalk(const void *, void (*)(const void *, VISIT, int));

__END_DECLS

#endif /* !_SEARCH_H_ */