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.basic; 025 026 import org.ujmp.core.Coordinates; 027 import org.ujmp.core.Matrix; 028 import org.ujmp.core.MatrixFactory; 029 import org.ujmp.core.doublematrix.calculation.AbstractDoubleCalculation; 030 import org.ujmp.core.exceptions.MatrixException; 031 import org.ujmp.core.util.MathUtil; 032 033 public class Minus extends AbstractDoubleCalculation { 034 private static final long serialVersionUID = -523666702400878432L; 035 036 private boolean ignoreNaN = false; 037 038 public Minus(Matrix m1, Matrix m2) { 039 this(true, m1, m2); 040 } 041 042 public Minus(boolean ignoreNaN, Matrix m1, Matrix m2) { 043 super(m1, m2); 044 this.ignoreNaN = ignoreNaN; 045 if (m2.isScalar() && !Coordinates.equals(m1.getSize(), m2.getSize())) { 046 getSources()[1] = MatrixFactory.fill(m2.getAsDouble(0, 0), m1.getSize()); 047 } else if (m1.isScalar() && !Coordinates.equals(m1.getSize(), m2.getSize())) { 048 getSources()[0] = MatrixFactory.fill(m1.getAsDouble(0, 0), m2.getSize()); 049 } 050 } 051 052 public Minus(boolean ignoreNaN, Matrix m1, double v2) throws MatrixException { 053 this(m1, MatrixFactory.fill(v2, m1.getSize())); 054 } 055 056 public Minus() { 057 super(); 058 } 059 060 public double getDouble(long... coordinates) throws MatrixException { 061 return ignoreNaN ? MathUtil.ignoreNaN(getSources()[0].getAsDouble(coordinates)) 062 - MathUtil.ignoreNaN(getSources()[1].getAsDouble(coordinates)) : getSources()[0] 063 .getAsDouble(coordinates) 064 - getSources()[1].getAsDouble(coordinates); 065 } 066 067 }