From 64bc6412188b141c010ac3b8e813b837dd991e80 Mon Sep 17 00:00:00 2001 From: Erik Andersen Date: Sun, 14 May 2000 04:16:35 +0000 Subject: Initial revision --- include/search.h | 94 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 94 insertions(+) create mode 100644 include/search.h (limited to 'include/search.h') diff --git a/include/search.h b/include/search.h new file mode 100644 index 000000000..b9c8a1785 --- /dev/null +++ b/include/search.h @@ -0,0 +1,94 @@ +/* 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 + +#define __need_size_t +#define __need_NULL +#include + +__BEGIN_DECLS + +#ifndef __COMPAR_FN_T +#define __COMPAR_FN_T +typedef int (*__compar_fn_t) __P ((__const __ptr_t, __const __ptr_t)); +#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, __const void ** __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 */ -- cgit v1.2.3