/* Copyright (C) 1993 Ulrich Drepper This file is intended to be included in the GNU C Library and the Linux C Library. So the copyright notice will be: Copyright (C) 1993 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Library General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. For now the file can be distributed under the LGPL. */ #ifndef _SEARCH_H #define _SEARCH_H #include <features.h> #define __need_size_t #define __need_NULL #include <stddef.h> /* Get __compar_fn_t from stdlib.h */ #include <stdlib.h> __BEGIN_DECLS #if 0 #ifndef __COMPAR_FN_T #define __COMPAR_FN_T typedef int (*__compar_fn_t) __P ((__const __ptr_t, __const __ptr_t)); #endif #endif /* for use with hsearch(3) */ typedef struct entry { char *key; char *data; } ENTRY; typedef enum { FIND, ENTER } ACTION; extern ENTRY * hsearch __P((ENTRY __item, ACTION __action)); extern int hcreate __P((unsigned __nel)); extern void hdestroy __P((void)); /* The tsearch routines are very interesting. They make many * assumptions about the compiler. It assumpts that the first field * in node must be the "key" field, which points to the datum. * Everything depends on that. It is a very tricky stuff. H.J. */ /* For tsearch */ typedef enum { preorder, postorder, endorder, leaf } VISIT; extern void *tsearch __P((__const void * __key, void **__rootp, __compar_fn_t compar)); extern void *tfind __P((__const void * __key, void * __const * __rootp, __compar_fn_t compar)); extern void *tdelete __P((__const void * __key, void ** __rootp, __compar_fn_t compar)); #ifndef __ACTION_FN_T #define __ACTION_FN_T /* FYI, the first argument should be a pointer to "key". * Please read the man page for details. */ typedef void (*__action_fn_t) __P((__const void *__nodep, __const VISIT __value, __const int __level)); #endif extern void twalk __P((__const void * __root, __action_fn_t action)); extern void * lfind __P((__const void * __key, __const void * __base, size_t * __nmemb, size_t __size, __compar_fn_t __compar)); extern void * lsearch __P((__const void * __key, __const void * __base, size_t * __nmemb, size_t __size, __compar_fn_t __compar)); __END_DECLS #endif /* search.h */