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A comprehensive collection of matrix data structures, linear solvers, least squares methods,
eigenvalue, and singular value decompositions.
/*
* Copyright (C) 2003-2006 Bjørn-Ove Heimsund
*
* This file is part of MTJ.
*
* This library 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 2.1 of the License, or (at your
* option) any later version.
*
* This library 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 this library; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package no.uib.cipr.matrix.distributed;
/**
* Contains predefined reductions
*
* @deprecated the no.uib.cipr.matrix.distributed package has been deprecated because
* of a number of hard to fix concurrency bugs. It is distributed only for backwards compatibility,
* but is not recommended. The utility of this package is questionable, as it does not allow
* distribution of computation between JVMs or across a network. For many people, distributed
* computing of multiple matrices can be achieved at a user-level through the
* JPPF Framework.
* Users who need to deal with few very large matrices may wish to implement their own storage classes
* and solvers using JPPF, but this will not be supported directly in matrix-toolkits-java.
*/
@Deprecated
public class Reductions {
private Reductions() {
// No need to instantiate
}
public static Reduction sum() {
return new Sum();
}
public static Reduction product() {
return new Product();
}
public static Reduction max() {
return new Max();
}
public static Reduction min() {
return new Min();
}
public static Reduction and() {
return new And();
}
public static Reduction or() {
return new Or();
}
/**
* Does a sum
*/
private static class Sum extends NumericalReduction {
@Override
protected void initByte(byte[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 0;
}
@Override
protected void initChar(char[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 0;
}
@Override
protected void initShort(short[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 0;
}
@Override
protected void initInt(int[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 0;
}
@Override
protected void initFloat(float[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 0;
}
@Override
protected void initLong(long[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 0;
}
@Override
protected void initDouble(double[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 0;
}
@Override
protected void opByte(byte[] x, byte[] y) {
assert x.length == y.length;
for (int i = 0; i < x.length; ++i)
x[i] += y[i];
}
@Override
protected void opChar(char[] x, char[] y) {
assert x.length == y.length;
for (int i = 0; i < x.length; ++i)
x[i] += y[i];
}
@Override
protected void opShort(short[] x, short[] y) {
assert x.length == y.length;
for (int i = 0; i < x.length; ++i)
x[i] += y[i];
}
@Override
protected void opInt(int[] x, int[] y) {
assert x.length == y.length;
for (int i = 0; i < x.length; ++i)
x[i] += y[i];
}
@Override
protected void opFloat(float[] x, float[] y) {
assert x.length == y.length;
for (int i = 0; i < x.length; ++i)
x[i] += y[i];
}
@Override
protected void opLong(long[] x, long[] y) {
assert x.length == y.length;
for (int i = 0; i < x.length; ++i)
x[i] += y[i];
}
@Override
protected void opDouble(double[] x, double[] y) {
assert x.length == y.length;
for (int i = 0; i < x.length; ++i)
x[i] += y[i];
}
}
/**
* Multiplies the elements
*/
private static class Product extends NumericalReduction {
@Override
protected void initByte(byte[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 1;
}
@Override
protected void initChar(char[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 1;
}
@Override
protected void initShort(short[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 1;
}
@Override
protected void initInt(int[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 1;
}
@Override
protected void initFloat(float[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 1;
}
@Override
protected void initLong(long[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 1;
}
@Override
protected void initDouble(double[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = 1;
}
@Override
protected void opByte(byte[] x, byte[] y) {
for (int i = 0; i < x.length; ++i)
x[i] *= y[i];
}
@Override
protected void opChar(char[] x, char[] y) {
for (int i = 0; i < x.length; ++i)
x[i] *= y[i];
}
@Override
protected void opShort(short[] x, short[] y) {
for (int i = 0; i < x.length; ++i)
x[i] *= y[i];
}
@Override
protected void opInt(int[] x, int[] y) {
for (int i = 0; i < x.length; ++i)
x[i] *= y[i];
}
@Override
protected void opFloat(float[] x, float[] y) {
for (int i = 0; i < x.length; ++i)
x[i] *= y[i];
}
@Override
protected void opLong(long[] x, long[] y) {
for (int i = 0; i < x.length; ++i)
x[i] *= y[i];
}
@Override
protected void opDouble(double[] x, double[] y) {
for (int i = 0; i < x.length; ++i)
x[i] *= y[i];
}
}
/**
* Finds max
*/
private static class Max extends NumericalReduction {
@Override
protected void initByte(byte[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Byte.MIN_VALUE;
}
@Override
protected void initChar(char[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Character.MIN_VALUE;
}
@Override
protected void initShort(short[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Short.MIN_VALUE;
}
@Override
protected void initInt(int[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Integer.MIN_VALUE;
}
@Override
protected void initFloat(float[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Float.MIN_VALUE;
}
@Override
protected void initLong(long[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Long.MIN_VALUE;
}
@Override
protected void initDouble(double[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Double.MIN_VALUE;
}
@Override
protected void opByte(byte[] x, byte[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = (byte) Math.max(x[i], y[i]);
}
@Override
protected void opChar(char[] x, char[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = (char) Math.max(x[i], y[i]);
}
@Override
protected void opShort(short[] x, short[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = (short) Math.max(x[i], y[i]);
}
@Override
protected void opInt(int[] x, int[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = Math.max(x[i], y[i]);
}
@Override
protected void opFloat(float[] x, float[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = Math.max(x[i], y[i]);
}
@Override
protected void opLong(long[] x, long[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = Math.max(x[i], y[i]);
}
@Override
protected void opDouble(double[] x, double[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = Math.max(x[i], y[i]);
}
}
/**
* Finds min
*/
private static class Min extends NumericalReduction {
@Override
protected void initByte(byte[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Byte.MAX_VALUE;
}
@Override
protected void initChar(char[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Character.MAX_VALUE;
}
@Override
protected void initShort(short[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Short.MAX_VALUE;
}
@Override
protected void initInt(int[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Integer.MAX_VALUE;
}
@Override
protected void initFloat(float[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Float.MAX_VALUE;
}
@Override
protected void initLong(long[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Long.MAX_VALUE;
}
@Override
protected void initDouble(double[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = Double.MAX_VALUE;
}
@Override
protected void opByte(byte[] x, byte[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = (byte) Math.min(x[i], y[i]);
}
@Override
protected void opChar(char[] x, char[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = (char) Math.min(x[i], y[i]);
}
@Override
protected void opShort(short[] x, short[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = (short) Math.min(x[i], y[i]);
}
@Override
protected void opInt(int[] x, int[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = Math.min(x[i], y[i]);
}
@Override
protected void opFloat(float[] x, float[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = Math.min(x[i], y[i]);
}
@Override
protected void opLong(long[] x, long[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = Math.min(x[i], y[i]);
}
@Override
protected void opDouble(double[] x, double[] y) {
for (int i = 0; i < x.length; ++i)
x[i] = Math.min(x[i], y[i]);
}
}
private static abstract class NumericalReduction extends Reduction {
@Override
protected void initBoolean(boolean[] x) {
throw new UnsupportedOperationException();
}
@Override
protected void opBoolean(boolean[] x, boolean[] y) {
throw new UnsupportedOperationException();
}
}
private static abstract class BooleanReduction extends Reduction {
@Override
protected void initByte(byte[] x) {
throw new UnsupportedOperationException();
}
@Override
protected void initChar(char[] x) {
throw new UnsupportedOperationException();
}
@Override
protected void initShort(short[] x) {
throw new UnsupportedOperationException();
}
@Override
protected void initInt(int[] x) {
throw new UnsupportedOperationException();
}
@Override
protected void initFloat(float[] x) {
throw new UnsupportedOperationException();
}
@Override
protected void initLong(long[] x) {
throw new UnsupportedOperationException();
}
@Override
protected void initDouble(double[] x) {
throw new UnsupportedOperationException();
}
@Override
protected void opByte(byte[] x, byte[] y) {
throw new UnsupportedOperationException();
}
@Override
protected void opChar(char[] x, char[] y) {
throw new UnsupportedOperationException();
}
@Override
protected void opShort(short[] x, short[] y) {
throw new UnsupportedOperationException();
}
@Override
protected void opInt(int[] x, int[] y) {
throw new UnsupportedOperationException();
}
@Override
protected void opFloat(float[] x, float[] y) {
throw new UnsupportedOperationException();
}
@Override
protected void opLong(long[] x, long[] y) {
throw new UnsupportedOperationException();
}
@Override
protected void opDouble(double[] x, double[] y) {
throw new UnsupportedOperationException();
}
}
/**
* And boolean reduction
*/
private static class And extends BooleanReduction {
@Override
protected void initBoolean(boolean[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = true;
}
@Override
protected void opBoolean(boolean[] x, boolean[] y) {
for (int i = 0; i < x.length; ++i)
x[i] &= y[i];
}
}
/**
* Or boolean reduction
*/
private static class Or extends BooleanReduction {
@Override
protected void initBoolean(boolean[] x) {
for (int i = 0; i < x.length; ++i)
x[i] = false;
}
@Override
protected void opBoolean(boolean[] x, boolean[] y) {
for (int i = 0; i < x.length; ++i)
x[i] |= y[i];
}
}
}