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.ejml.calculation; 025 026 import org.ejml.data.DenseMatrix64F; 027 import org.ejml.ops.CommonOps; 028 import org.ujmp.core.Matrix; 029 import org.ujmp.ejml.EJMLDenseDoubleMatrix2D; 030 031 public class Inv 032 implements 033 org.ujmp.core.doublematrix.calculation.general.decomposition.Inv<Matrix> { 034 035 public static Inv INSTANCE = new Inv(); 036 037 public Matrix calc(Matrix source) { 038 DenseMatrix64F matrix = null; 039 if (source instanceof EJMLDenseDoubleMatrix2D) { 040 matrix = ((EJMLDenseDoubleMatrix2D) source).getWrappedObject(); 041 } else { 042 matrix = new EJMLDenseDoubleMatrix2D(source).getWrappedObject(); 043 } 044 DenseMatrix64F ret = new DenseMatrix64F(matrix.numRows, matrix.numCols); 045 CommonOps.invert(matrix, ret); 046 return new EJMLDenseDoubleMatrix2D(ret); 047 } 048 049 }