/*
* Copyright (C) 2008-2015 by Holger Arndt
*
* This file is part of the Universal Java Matrix Package (UJMP).
* See the NOTICE file distributed with this work for additional
* information regarding copyright ownership and licensing.
*
* UJMP 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
* of the License, or (at your option) any later version.
*
* UJMP 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 UJMP; if not, write to the
* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
package org.ujmp.jblas.calculation;
import org.jblas.DoubleMatrix;
import org.ujmp.core.Matrix;
import org.ujmp.core.calculation.MtimesCalculation;
import org.ujmp.core.doublematrix.DenseDoubleMatrix2D;
import org.ujmp.core.interfaces.HasColumnMajorDoubleArray1D;
import org.ujmp.core.util.MathUtil;
import org.ujmp.jblas.JBlasDenseDoubleMatrix2D;
public class Mtimes implements MtimesCalculation<Matrix, Matrix, Matrix> {
public void calc(Matrix source1, Matrix source2, Matrix target) {
final DoubleMatrix m1;
final DoubleMatrix m2;
if (source1 instanceof JBlasDenseDoubleMatrix2D) {
m1 = ((JBlasDenseDoubleMatrix2D) source1).getWrappedObject();
} else if (source1 instanceof HasColumnMajorDoubleArray1D) {
m1 = new JBlasDenseDoubleMatrix2D(MathUtil.longToInt(source1.getRowCount()), MathUtil.longToInt(source1
.getColumnCount()), ((HasColumnMajorDoubleArray1D) source1).getColumnMajorDoubleArray1D())
.getWrappedObject();
} else {
m1 = new JBlasDenseDoubleMatrix2D(source1).getWrappedObject();
}
if (source2 instanceof JBlasDenseDoubleMatrix2D) {
m2 = ((JBlasDenseDoubleMatrix2D) source2).getWrappedObject();
} else if (source2 instanceof HasColumnMajorDoubleArray1D) {
m2 = new JBlasDenseDoubleMatrix2D(MathUtil.longToInt(source2.getRowCount()), MathUtil.longToInt(source2
.getColumnCount()), ((HasColumnMajorDoubleArray1D) source2).getColumnMajorDoubleArray1D())
.getWrappedObject();
} else {
m2 = new JBlasDenseDoubleMatrix2D(source2).getWrappedObject();
}
if (target instanceof JBlasDenseDoubleMatrix2D) {
final DoubleMatrix t = ((JBlasDenseDoubleMatrix2D) target).getWrappedObject();
m1.mmuli(m2, t);
} else if (target instanceof HasColumnMajorDoubleArray1D) {
final DoubleMatrix t = new DoubleMatrix((int) target.getRowCount(), (int) target.getColumnCount(),
((HasColumnMajorDoubleArray1D) target).getColumnMajorDoubleArray1D());
m1.mmuli(m2, t);
} else if (target instanceof DenseDoubleMatrix2D) {
final DenseDoubleMatrix2D t = (DenseDoubleMatrix2D) target;
final DoubleMatrix r = new DoubleMatrix((int) source1.getRowCount(), (int) source2.getColumnCount());
m1.mmuli(m2, r);
for (long[] c : target.allCoordinates()) {
t.setDouble(r.get((int) c[0], (int) c[1]), c[0], c[1]);
}
} else {
final DoubleMatrix r = new DoubleMatrix((int) source1.getRowCount(), (int) source2.getColumnCount());
m1.mmuli(m2, r);
for (long[] c : target.allCoordinates()) {
target.setAsDouble(r.get((int) c[0], (int) c[1]), c);
}
}
}
}