include/search.h

   1 /*      $NetBSD: search.h,v 1.12 1999/02/22 10:34:28 christos Exp $     */
   2 /* $FreeBSD: src/include/search.h,v 1.3.2.1 2000/08/17 07:38:34 jhb Exp $ */
   3 /* $DragonFly: src/include/search.h,v 1.5 2003/11/15 20:28:42 asmodai Exp $ */
   4
   5 /*
   6  * Written by J.T. Conklin <jtc@netbsd.org>
   7  * Public domain.
   8  */
   9
  10 #ifndef _SEARCH_H_
  11 #define _SEARCH_H_
  12
  13 #include <sys/cdefs.h>
  14 #include <machine/stdint.h>
  15
  16 #ifndef _SIZE_T_DECLARED
  17 #define _SIZE_T_DECLARED
  18 typedef __size_t        size_t;
  19 #endif
  20
  21 typedef struct entry {
  22         char *key;
  23         void *data;
  24 } ENTRY;
  25
  26 typedef enum {
  27         FIND, ENTER
  28 } ACTION;
  29
  30 typedef enum {
  31         preorder,
  32         postorder,
  33         endorder,
  34         leaf
  35 } VISIT;
  36
  37 #ifdef _SEARCH_PRIVATE
  38 typedef struct node {
  39         char         *key;
  40         struct node  *llink, *rlink;
  41 } node_t;
  42 #endif
  43
  44 __BEGIN_DECLS
  45 int      hcreate (size_t);
  46 void     hdestroy (void);
  47 ENTRY   *hsearch (ENTRY, ACTION);
  48 void    *tdelete (const void *, void **,
  49                       int (*)(const void *, const void *));
  50 void    *tfind (const void *, void **,
  51                       int (*)(const void *, const void *));
  52 void    *tsearch (const void *, void **,
  53                       int (*)(const void *, const void *));
  54 void      twalk (const void *, void (*)(const void *, VISIT, int));
  55 __END_DECLS
  56
  57 #endif /* !_SEARCH_H_ */