include/search.h

   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: src/include/search.h,v 1.10 2002/10/16 14:29:23 robert Exp $
   7  */
   8
   9 #ifndef _SEARCH_H_
  10 #define _SEARCH_H_
  11
  12 #include <sys/cdefs.h>
  13 #include <sys/types.h>
  14
  15 typedef struct entry {
  16         char    *key;
  17         void    *data;
  18 } ENTRY;
  19
  20 typedef enum {
  21         FIND, ENTER
  22 } ACTION;
  23
  24 typedef enum {
  25         preorder,
  26         postorder,
  27         endorder,
  28         leaf
  29 } VISIT;
  30
  31 #ifdef _SEARCH_PRIVATE
  32 typedef struct node {
  33         char         *key;
  34         struct node  *llink, *rlink;
  35 } node_t;
  36
  37 struct que_elem {
  38         struct que_elem *next;
  39         struct que_elem *prev;
  40 };
  41 #endif
  42
  43 __BEGIN_DECLS
  44 int      hcreate(size_t);
  45 void     hdestroy(void);
  46 ENTRY   *hsearch(ENTRY, ACTION);
  47 void     insque(void *, void *);
  48 void    *lfind(const void *, const void *, size_t *, size_t,
  49             int (*)(const void *, const void *));
  50 void    *lsearch(const void *, void *, size_t *, size_t,
  51             int (*)(const void *, const void *));
  52 void     remque(void *);
  53 void    *tdelete(const void * __restrict, void ** __restrict,
  54             int (*)(const void *, const void *));
  55 void    *tfind(const void *, void * const *,
  56             int (*)(const void *, const void *));
  57 void    *tsearch(const void *, void **, int (*)(const void *, const void *));
  58 void     twalk(const void *, void (*)(const void *, VISIT, int));
  59 __END_DECLS
  60
  61 #endif /* !_SEARCH_H_ */