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jlechner |
/* $NetBSD: hcreate.c,v 1.2 2001/02/19 21:26:04 ross Exp $ */
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/*
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* Copyright (c) 2001 Christopher G. Demetriou
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* <<Id: LICENSE_GC,v 1.1 2001/10/01 23:24:05 cgd Exp>>
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*/
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/*
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* hcreate() / hsearch() / hdestroy()
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*
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* SysV/XPG4 hash table functions.
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*
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* Implementation done based on NetBSD manual page and Solaris manual page,
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* plus my own personal experience about how they're supposed to work.
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*
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* I tried to look at Knuth (as cited by the Solaris manual page), but
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* nobody had a copy in the office, so...
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*/
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#include <sys/cdefs.h>
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#if 0
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#if defined(LIBC_SCCS) && !defined(lint)
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__RCSID("$NetBSD: hcreate.c,v 1.2 2001/02/19 21:26:04 ross Exp $");
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#endif /* LIBC_SCCS and not lint */
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#endif
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <errno.h>
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#include <search.h>
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#include <stdlib.h>
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#include <string.h>
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static struct hsearch_data htab;
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int
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_DEFUN(hcreate, (nel), size_t nel)
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{
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return hcreate_r (nel, &htab);
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}
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void
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_DEFUN_VOID (hdestroy)
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{
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hdestroy_r (&htab);
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}
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ENTRY *
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_DEFUN(hsearch, (item, action),
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ENTRY item _AND
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ACTION action)
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{
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ENTRY *retval;
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hsearch_r (item, action, &retval, &htab);
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return retval;
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}
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