/*
* Copyright 2011-2013, by Vladimir Kostyukov and Contributors.
*
* This file is part of la4j project (http://la4j.org)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Contributor(s): -
*
*/
package org.la4j.linear;
import org.junit.Test;
import org.la4j.LinearAlgebra;
public class SquareRootSolverTest extends AbstractSolverTest {
@Override
public LinearAlgebra.SolverFactory solverFactory() {
return LinearAlgebra.SQUARE_ROOT;
}
@Test
public void testSolve_1x1() {
double a[][] = new double[][] {
{ 44.0 }
};
double b[] = new double[] { -22.0 };
performTest(a, b);
}
@Test
public void testSolve_2x2() {
double a[][] = new double[][] {
{ -7.0, 77.0 },
{ 77.0, 14.0 }
};
double b[] = new double[] { -77.0, 768.6 };
performTest(a, b);
}
@Test
public void testSolve_3x3() {
double a[][] = new double[][] {
{ 1.0, 0.0, 0.0 },
{ 0.0, 5.0, 0.0 },
{ 0.0, 0.0, 9.0 }
};
double b[] = new double[] { 0.0, 2.0, 0.0 };
performTest(a, b);
}
@Test
public void testSolve_3x3_2() {
double a[][] = new double[][] {
{ 9.0, -1.0, -18.0 },
{ -1.0, 6.0, -3.0 },
{ -18.0, -3.0, 33.0 }
};
double b[] = new double[] { -45.0, -10.0, 81.0 };
performTest(a, b);
}
@Test
public void testSolve_4x4() {
double a[][] = new double[][] {
{ -55.0, 11.0, 1.0, 0.0 },
{ 11.0, 66.0, 4.0, -1.0 },
{ 1.0, 4.0, -44.0, -9.0 },
{ 0.0, -1.0, -9.0, 33.0 }
};
double b[] = new double[] { -276.0, 29.0, -439.0, -89.0 };
performTest(a, b);
}
@Test
public void testSolve_5x5() {
double a[][] = new double[][] {
{ 14.0, 0.0, -10.0, 11.0, -4.0 },
{ 0.0, 21.0, -2.0, 0.0, 11.0 },
{ -10.0, -2.0, -7.0, 1.0, -3.0 },
{ 11.0, 0.0, 1.0, -28.0, 6.0 },
{ -4.0, 11.0, -3.0, 6.0, 0.7 },
};
double b[] = new double[] { 104.0, -256.0, -45.0, 54.0, -143.8 };
performTest(a, b);
}
}