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86 lines
2.9 KiB
C
86 lines
2.9 KiB
C
/* Copyright (C) 2002, 2004 Christopher Clark <firstname.lastname@cl.cam.ac.uk> */
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#ifndef __HASHTABLE_PRIVATE_CWC22_H__
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#define __HASHTABLE_PRIVATE_CWC22_H__
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#include "hashtable.h"
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/*****************************************************************************/
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struct entry
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{
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void *k, *v;
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unsigned int h;
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struct entry *next;
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};
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struct hashtable {
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unsigned int tablelength;
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struct entry **table;
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unsigned int entrycount;
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unsigned int loadlimit;
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unsigned int primeindex;
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unsigned int (*hashfn) (void *k);
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int (*eqfn) (void *k1, void *k2);
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};
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/*****************************************************************************/
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unsigned int
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hash(struct hashtable *h, void *k);
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/*****************************************************************************/
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/* indexFor */
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static inline unsigned int
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indexFor(unsigned int tablelength, unsigned int hashvalue) {
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return (hashvalue % tablelength);
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}
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/* Only works if tablelength == 2^N */
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/*static inline unsigned int
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indexFor(unsigned int tablelength, unsigned int hashvalue)
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{
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return (hashvalue & (tablelength - 1u));
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}
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*/
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/*****************************************************************************/
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#define freekey(X) free(X)
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/*define freekey(X) ; */
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/*****************************************************************************/
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#endif /* __HASHTABLE_PRIVATE_CWC22_H__*/
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/*
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* Copyright (c) 2002, Christopher Clark
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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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*
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* * 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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*
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* * 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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*
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* * Neither the name of the original author; nor the names of any contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
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* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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