/*
* 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.core.calculation;
import java.math.BigDecimal;
import org.ujmp.core.DenseMatrix;
import org.ujmp.core.DenseMatrix2D;
import org.ujmp.core.Matrix;
import org.ujmp.core.SparseMatrix;
import org.ujmp.core.doublematrix.DenseDoubleMatrix2D;
import org.ujmp.core.interfaces.HasColumnMajorDoubleArray1D;
import org.ujmp.core.interfaces.HasRowMajorDoubleArray2D;
import org.ujmp.core.mapmatrix.MapMatrix;
import org.ujmp.core.util.MathUtil;
import org.ujmp.core.util.UJMPSettings;
import org.ujmp.core.util.VerifyUtil;
import org.ujmp.core.util.concurrent.PForEquidistant;
public class TimesScalar {
public static final TimesScalarCalculation<Matrix, Matrix> MATRIX = new TimesScalarMatrix();
public static final TimesScalarCalculation<DenseMatrix, DenseMatrix> DENSEMATRIX = new TimesScalarDenseMatrix();
public static final TimesScalarCalculation<DenseMatrix2D, DenseMatrix2D> DENSEMATRIX2D = new TimesScalarDenseMatrix2D();
public static final TimesScalarCalculation<DenseDoubleMatrix2D, DenseDoubleMatrix2D> DENSEDOUBLEMATRIX2D = new TimesScalarDenseDoubleMatrix2D();
public static final TimesScalarCalculation<SparseMatrix, SparseMatrix> SPARSEMATRIX = new TimesScalarSparseMatrix();
}
class TimesScalarMatrix implements TimesScalarCalculation<Matrix, Matrix> {
public final void calc(final Matrix source, final BigDecimal factor, final Matrix target) {
if (source instanceof DenseDoubleMatrix2D && target instanceof DenseDoubleMatrix2D) {
TimesScalar.DENSEDOUBLEMATRIX2D.calc((DenseDoubleMatrix2D) source, factor,
(DenseDoubleMatrix2D) target);
} else if (source instanceof DenseMatrix2D && target instanceof DenseMatrix2D) {
TimesScalar.DENSEMATRIX2D.calc((DenseMatrix2D) source, factor,
(DenseDoubleMatrix2D) target);
} else if (source instanceof DenseMatrix && target instanceof DenseMatrix) {
TimesScalar.DENSEMATRIX.calc((DenseMatrix) source, factor, (DenseMatrix) target);
} else if (source instanceof SparseMatrix && target instanceof SparseMatrix) {
TimesScalar.SPARSEMATRIX.calc((SparseMatrix) source, factor, (SparseMatrix) target);
} else {
VerifyUtil.verifySameSize(source, target);
for (long[] c : source.allCoordinates()) {
BigDecimal value = source.getAsBigDecimal(c);
BigDecimal result = MathUtil.times(value, factor);
target.setAsBigDecimal(result, c);
}
if (source != target) {
MapMatrix<String, Object> a = source.getMetaData();
if (a != null) {
target.setMetaData(a.clone());
}
}
}
}
public final void calc(final Matrix source, final double factor, final Matrix target) {
if (source instanceof DenseMatrix && target instanceof DenseMatrix) {
TimesScalar.DENSEMATRIX.calc((DenseMatrix) source, factor, (DenseMatrix) target);
} else if (source instanceof SparseMatrix && target instanceof SparseMatrix) {
TimesScalar.SPARSEMATRIX.calc((SparseMatrix) source, factor, (SparseMatrix) target);
} else {
calc(source, new BigDecimal(factor, UJMPSettings.getInstance().getMathContext()),
target);
}
}
};
class TimesScalarDenseMatrix implements TimesScalarCalculation<DenseMatrix, DenseMatrix> {
public final void calc(final DenseMatrix source, final BigDecimal factor,
final DenseMatrix target) {
if (source instanceof DenseMatrix2D && target instanceof DenseMatrix2D) {
TimesScalar.DENSEMATRIX2D.calc((DenseMatrix2D) source, factor, (DenseMatrix2D) target);
} else {
VerifyUtil.verifySameSize(source, target);
for (long[] c : source.allCoordinates()) {
BigDecimal value = source.getAsBigDecimal(c);
BigDecimal result = MathUtil.times(value, factor);
target.setAsBigDecimal(result, c);
}
if (source != target) {
MapMatrix<String, Object> a = source.getMetaData();
if (a != null) {
target.setMetaData(a.clone());
}
}
}
}
public final void calc(final DenseMatrix source, final double factor, final DenseMatrix target) {
if (source instanceof DenseMatrix2D && target instanceof DenseMatrix2D) {
TimesScalar.DENSEMATRIX2D.calc((DenseMatrix2D) source, factor, (DenseMatrix2D) target);
} else {
calc(source, new BigDecimal(factor, UJMPSettings.getInstance().getMathContext()),
target);
}
}
};
class TimesScalarSparseMatrix implements TimesScalarCalculation<SparseMatrix, SparseMatrix> {
public final void calc(final SparseMatrix source, final BigDecimal factor,
final SparseMatrix target) {
VerifyUtil.verifySameSize(source, target);
for (long[] c : source.availableCoordinates()) {
BigDecimal value = source.getAsBigDecimal(c);
BigDecimal result = MathUtil.times(value, factor);
target.setAsBigDecimal(result, c);
}
if (source != target) {
MapMatrix<String, Object> a = source.getMetaData();
if (a != null) {
target.setMetaData(a.clone());
}
}
}
public final void calc(final SparseMatrix source, final double factor, final SparseMatrix target) {
calc(source, new BigDecimal(factor, UJMPSettings.getInstance().getMathContext()), target);
}
};
class TimesScalarDenseMatrix2D implements TimesScalarCalculation<DenseMatrix2D, DenseMatrix2D> {
public final void calc(final DenseMatrix2D source, final BigDecimal factor,
final DenseMatrix2D target) {
if (source instanceof DenseDoubleMatrix2D && target instanceof DenseDoubleMatrix2D) {
TimesScalar.DENSEDOUBLEMATRIX2D.calc((DenseDoubleMatrix2D) source, factor,
(DenseDoubleMatrix2D) target);
} else {
VerifyUtil.verifySameSize(source, target);
for (int r = (int) source.getRowCount(); --r != -1;) {
for (int c = (int) source.getColumnCount(); --c != -1;) {
BigDecimal value = source.getAsBigDecimal(r, c);
BigDecimal result = MathUtil.times(value, factor);
target.setAsBigDecimal(result, r, c);
}
}
if (source != target) {
MapMatrix<String, Object> a = source.getMetaData();
if (a != null) {
target.setMetaData(a.clone());
}
}
}
}
public final void calc(final DenseMatrix2D source, final double factor,
final DenseMatrix2D target) {
if (source instanceof DenseDoubleMatrix2D && target instanceof DenseDoubleMatrix2D) {
TimesScalar.DENSEDOUBLEMATRIX2D.calc((DenseDoubleMatrix2D) source, factor,
(DenseDoubleMatrix2D) target);
} else {
calc(source, new BigDecimal(factor, UJMPSettings.getInstance().getMathContext()),
target);
}
}
};
class TimesScalarDenseDoubleMatrix2D implements
TimesScalarCalculation<DenseDoubleMatrix2D, DenseDoubleMatrix2D> {
public final void calc(final DenseDoubleMatrix2D source, final BigDecimal factor,
final DenseDoubleMatrix2D target) {
calc(source, factor.doubleValue(), target);
}
public final void calc(final DenseDoubleMatrix2D source, final double factor,
final DenseDoubleMatrix2D target) {
if (source instanceof HasColumnMajorDoubleArray1D
&& target instanceof HasColumnMajorDoubleArray1D) {
calc(((HasColumnMajorDoubleArray1D) source).getColumnMajorDoubleArray1D(), factor,
((HasColumnMajorDoubleArray1D) target).getColumnMajorDoubleArray1D());
} else if (source instanceof HasRowMajorDoubleArray2D
&& target instanceof HasRowMajorDoubleArray2D) {
calc(((HasRowMajorDoubleArray2D) source).getRowMajorDoubleArray2D(), factor,
((HasRowMajorDoubleArray2D) target).getRowMajorDoubleArray2D());
} else {
VerifyUtil.verifySameSize(source, target);
for (int r = (int) source.getRowCount(); --r != -1;) {
for (int c = (int) source.getColumnCount(); --c != -1;) {
target.setDouble(factor * source.getDouble(r, c), r, c);
}
}
}
if (source != target) {
MapMatrix<String, Object> a = source.getMetaData();
if (a != null) {
target.setMetaData(a.clone());
}
}
}
private final void calc(final double[][] source, final double factor, final double[][] target) {
VerifyUtil.verifySameSize(source, target);
final int rows = source.length;
final int cols = source[0].length;
if (UJMPSettings.getInstance().getNumberOfThreads() > 1 && rows >= 100 && cols >= 100) {
new PForEquidistant(0, rows - 1) {
public void step(int i) {
double[] tsource = source[i];
double[] ttarget = target[i];
for (int c = 0; c < cols; c++) {
ttarget[c] = tsource[c] * factor;
}
}
};
} else {
double[] tsource = null;
double[] ttarget = null;
for (int r = 0; r < rows; r++) {
tsource = source[r];
ttarget = target[r];
for (int c = 0; c < cols; c++) {
ttarget[c] = tsource[c] * factor;
}
}
}
}
private final void calc(final double[] source, final double factor, final double[] target) {
VerifyUtil.verifySameSize(source, target);
final int length = source.length;
for (int i = 0; i < length; i++) {
target[i] = source[i] * factor;
}
}
};