001    /*
002     * Copyright (C) 2008-2010 by Holger Arndt
003     *
004     * This file is part of the Universal Java Matrix Package (UJMP).
005     * See the NOTICE file distributed with this work for additional
006     * information regarding copyright ownership and licensing.
007     *
008     * UJMP is free software; you can redistribute it and/or modify
009     * it under the terms of the GNU Lesser General Public License as
010     * published by the Free Software Foundation; either version 2
011     * of the License, or (at your option) any later version.
012     *
013     * UJMP is distributed in the hope that it will be useful,
014     * but WITHOUT ANY WARRANTY; without even the implied warranty of
015     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
016     * GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public
019     * License along with UJMP; if not, write to the
020     * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
021     * Boston, MA  02110-1301  USA
022     */
023    
024    package org.ujmp.core.doublematrix.calculation.entrywise.creators;
025    
026    import java.math.BigInteger;
027    
028    import org.ujmp.core.Matrix;
029    import org.ujmp.core.bigintegermatrix.calculation.AbstractBigIntegerCalculation;
030    import org.ujmp.core.util.MathUtil;
031    
032    public class Pascal extends AbstractBigIntegerCalculation {
033            private static final long serialVersionUID = -3371365696296367460L;
034    
035            public Pascal(Matrix matrix) {
036                    super(matrix);
037            }
038    
039            public BigInteger getBigInteger(long... coordinates) {
040                    return MathUtil.binomialCoefficientBig((int) (coordinates[ROW] + coordinates[COLUMN]),
041                                    (int) coordinates[ROW]);
042            }
043    
044    }