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Java > Open Source Codes > gnu > trove > TDoubleHashingStrategy


1 ///////////////////////////////////////////////////////////////////////////////
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// Copyright (c) 2002, Eric D. Friedman All Rights Reserved.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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///////////////////////////////////////////////////////////////////////////////
18

19 package gnu.trove;
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21 import java.io.Serializable;
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23 /**
24  * Interface to support pluggable hashing strategies in maps and sets.
25  * Implementors can use this interface to make the trove hashing
26  * algorithms use an optimal strategy when computing hashcodes.
27  *
28  * Created: Sun Nov 4 08:56:06 2001
29  *
30  * @author Eric D. Friedman
31  * @version $Id: TDoubleHashingStrategy.java,v 1.4 2004/11/09 15:48:46 ericdf Exp $
32  */

33
34 public interface TDoubleHashingStrategy extends Serializable {
35     /**
36      * Computes a hash code for the specified double. Implementors
37      * can use the double's own value or a custom scheme designed to
38      * minimize collisions for a known set of input.
39      *
40      * @param double for which the hashcode is to be computed
41      * @return the hashCode
42      */

43     public int computeHashCode(double val);
44 } // TDoubleHashingStrategy
45
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