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 }