/*
* 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.doublematrix.calculation.general.decomposition;
import org.ujmp.core.Matrix;
import org.ujmp.core.util.DecompositionOps;
import org.ujmp.core.util.UJMPSettings;
public interface SolveSymm<T> extends Solve<T> {
public static int SQUARETHRESHOLD = 100;
public T calc(T a, T b);
public static final SolveSymm<Matrix> MATRIX = new SolveSymm<Matrix>() {
public final Matrix calc(Matrix a, Matrix b) {
if (UJMPSettings.getInstance().getNumberOfThreads() == 1) {
if (a.getRowCount() >= SQUARETHRESHOLD && a.getColumnCount() >= SQUARETHRESHOLD) {
return MATRIXSQUARELARGESINGLETHREADED.calc(a, b);
} else {
return MATRIXSQUARESMALLSINGLETHREADED.calc(a, b);
}
} else {
if (a.getRowCount() >= SQUARETHRESHOLD && a.getColumnCount() >= SQUARETHRESHOLD) {
return MATRIXSQUARELARGEMULTITHREADED.calc(a, b);
} else {
return MATRIXSQUARESMALLMULTITHREADED.calc(a, b);
}
}
}
};
public static final SolveSymm<Matrix> INSTANCE = MATRIX;
public static final SolveSymm<Matrix> UJMPSQUARE = new SolveSymm<Matrix>() {
public final Matrix calc(Matrix a, Matrix b) {
return LU.INSTANCE.solve(a, b);
}
};
public static final SolveSymm<Matrix> MATRIXSQUARESMALLSINGLETHREADED = UJMPSQUARE;
public static final SolveSymm<Matrix> MATRIXSQUARELARGESINGLETHREADED = new SolveSymm<Matrix>() {
public final Matrix calc(Matrix a, Matrix b) {
// no special implementation for symmetric matrices
Solve<Matrix> solve = null;
if (UJMPSettings.getInstance().isUseJBlas()) {
solve = DecompositionOps.SOLVE_JBLAS;
}
if (solve == null && UJMPSettings.getInstance().isUseOjalgo()) {
solve = DecompositionOps.SOLVE_OJALGO;
}
if (solve == null && UJMPSettings.getInstance().isUseEJML()) {
solve = DecompositionOps.SOLVE_EJML;
}
if (solve == null && UJMPSettings.getInstance().isUseMTJ()) {
solve = DecompositionOps.SOLVE_MTJ;
}
if (solve == null) {
solve = UJMPSQUARE;
}
return solve.calc(a, b);
}
};
public static final SolveSymm<Matrix> MATRIXSQUARELARGEMULTITHREADED = new SolveSymm<Matrix>() {
public Matrix calc(Matrix a, Matrix b) {
// no special implementation for symmetric matrices
Solve<Matrix> solve = null;
if (UJMPSettings.getInstance().isUseJBlas()) {
solve = DecompositionOps.SOLVE_JBLAS;
}
if (solve == null && UJMPSettings.getInstance().isUseOjalgo()) {
solve = DecompositionOps.SOLVE_OJALGO;
}
if (solve == null && UJMPSettings.getInstance().isUseEJML()) {
solve = DecompositionOps.SOLVE_EJML;
}
if (solve == null) {
solve = UJMPSQUARE;
}
return solve.calc(a, b);
}
};
public static final SolveSymm<Matrix> MATRIXSQUARESMALLMULTITHREADED = UJMPSQUARE;
}