org.openscience.cdk.hash.stereo.CombinedPermutationParity Maven / Gradle / Ivy
/*
* Copyright (c) 2013 John May
*
* Contact: [email protected]
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
* All we ask is that proper credit is given for our work, which includes
* - but is not limited to - adding the above copyright notice to the beginning
* of your source code files, and to any copyright notice that you may distribute
* with programs based on this work.
*
* This program 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 U
*/
package org.openscience.cdk.hash.stereo;
/**
* Combine two permutation parities into one.
*
* @author John May
* @cdk.module hash
* @cdk.githash
*/
final class CombinedPermutationParity extends PermutationParity {
private final PermutationParity left;
private final PermutationParity right;
/**
* Combines the left and right parity into a single parity. This parity is
* the product of the two separate parities.
*
* @param left either parity
* @param right other parity
*/
public CombinedPermutationParity(PermutationParity left, PermutationParity right) {
this.left = left;
this.right = right;
}
/**
*{@inheritDoc}
*/
@Override
public int parity(long[] current) {
return left.parity(current) * right.parity(current);
}
}
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