include/search.h

   1 /*-
   2  * Written by J.T. Conklin <jtc@NetBSD.org>
   3  * Public domain.
   4  *
   5  *      $NetBSD: search.h,v 1.16 2005/02/03 04:39:32 perry 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         void         *key;
  39         struct node  *llink, *rlink;
  40         signed char   balance;
  41 } node_t;
  42
  43 struct que_elem {
  44         struct que_elem *next;
  45         struct que_elem *prev;
  46 };
  47 #endif
  48
  49 #if __BSD_VISIBLE
  50 struct hsearch_data {
  51         struct __hsearch *__hsearch;
  52 };
  53 #endif
  54
  55 __BEGIN_DECLS
  56 int      hcreate(size_t);
  57 void     hdestroy(void);
  58 ENTRY   *hsearch(ENTRY, ACTION);
  59 void     insque(void *, void *);
  60 void    *lfind(const void *, const void *, size_t *, size_t,
  61             int (*)(const void *, const void *));
  62 void    *lsearch(const void *, void *, size_t *, size_t,
  63             int (*)(const void *, const void *));
  64 void     remque(void *);
  65 void    *tdelete(const void * __restrict, void ** __restrict,
  66             int (*)(const void *, const void *));
  67 void    *tfind(const void *, void * const *,
  68             int (*)(const void *, const void *));
  69 void    *tsearch(const void *, void **, int (*)(const void *, const void *));
  70 void     twalk(const void *, void (*)(const void *, VISIT, int));
  71
  72 #if __BSD_VISIBLE
  73 int      hcreate_r(size_t, struct hsearch_data *);
  74 void     hdestroy_r(struct hsearch_data *);
  75 int      hsearch_r(ENTRY, ACTION, ENTRY **, struct hsearch_data *);
  76 #endif
  77
  78 __END_DECLS
  79
  80 #endif /* !_SEARCH_H_ */