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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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package org.apache.commons.math.linear;
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import java.util.Arrays;
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import java.util.Random;
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import junit.framework.Test;
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import junit.framework.TestCase;
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import junit.framework.TestSuite;
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import org.apache.commons.math.TestUtils;
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import org.apache.commons.math.fraction.Fraction;
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import org.apache.commons.math.fraction.FractionField;
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* Test cases for the {@link BlockFieldMatrix} class.
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* @version $Revision: 790243 $ $Date: 2009-07-01 12:03:28 -0400 (Wed, 01 Jul 2009) $
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public final class BlockFieldMatrixTest extends TestCase {
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// 3 x 3 identity matrix
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protected Fraction[][] id = {
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{new Fraction(1),new Fraction(0),new Fraction(0)},
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{new Fraction(0),new Fraction(1),new Fraction(0)},
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{new Fraction(0),new Fraction(0),new Fraction(1)}
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// Test data for group operations
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protected Fraction[][] testData = {
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{new Fraction(1),new Fraction(2),new Fraction(3)},
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{new Fraction(2),new Fraction(5),new Fraction(3)},
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{new Fraction(1),new Fraction(0),new Fraction(8)}
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protected Fraction[][] testDataLU = {
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{new Fraction(2), new Fraction(5), new Fraction(3)},
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{new Fraction(1, 2), new Fraction(-5, 2), new Fraction(13, 2)},
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{new Fraction(1, 2), new Fraction(1, 5), new Fraction(1, 5)}
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protected Fraction[][] testDataPlus2 = {
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{new Fraction(3),new Fraction(4),new Fraction(5)},
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{new Fraction(4),new Fraction(7),new Fraction(5)},
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{new Fraction(3),new Fraction(2),new Fraction(10)}
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protected Fraction[][] testDataMinus = {
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{new Fraction(-1),new Fraction(-2),new Fraction(-3)},
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{new Fraction(-2),new Fraction(-5),new Fraction(-3)},
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{new Fraction(-1),new Fraction(0),new Fraction(-8)}
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protected Fraction[] testDataRow1 = {new Fraction(1),new Fraction(2),new Fraction(3)};
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protected Fraction[] testDataCol3 = {new Fraction(3),new Fraction(3),new Fraction(8)};
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protected Fraction[][] testDataInv = {
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{new Fraction(-40),new Fraction(16),new Fraction(9)},
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{new Fraction(13),new Fraction(-5),new Fraction(-3)},
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{new Fraction(5),new Fraction(-2),new Fraction(-1)}
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protected Fraction[] preMultTest = {new Fraction(8), new Fraction(12), new Fraction(33)};
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protected Fraction[][] testData2 = {
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{new Fraction(1),new Fraction(2),new Fraction(3)},
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{new Fraction(2),new Fraction(5),new Fraction(3)}
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protected Fraction[][] testData2T = {
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{new Fraction(1),new Fraction(2)},
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{new Fraction(2),new Fraction(5)},
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{new Fraction(3),new Fraction(3)}
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protected Fraction[][] testDataPlusInv = {
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{new Fraction(-39),new Fraction(18),new Fraction(12)},
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{new Fraction(15),new Fraction(0),new Fraction(0)},
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{new Fraction(6),new Fraction(-2),new Fraction(7)}
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// lu decomposition tests
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protected Fraction[][] luData = {
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{new Fraction(2),new Fraction(3),new Fraction(3)},
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{new Fraction(0),new Fraction(5),new Fraction(7)},
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{new Fraction(6),new Fraction(9),new Fraction(8)}
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protected Fraction[][] luDataLUDecomposition = {
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{new Fraction(6),new Fraction(9),new Fraction(8)},
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{new Fraction(0),new Fraction(5),new Fraction(7)},
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{new Fraction(1, 3),new Fraction(0),new Fraction(1, 3)}
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protected Fraction[][] singular = { {new Fraction(2),new Fraction(3)}, {new Fraction(2),new Fraction(3)} };
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protected Fraction[][] bigSingular = {
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{new Fraction(1),new Fraction(2),new Fraction(3),new Fraction(4)},
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{new Fraction(2),new Fraction(5),new Fraction(3),new Fraction(4)},
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{new Fraction(7),new Fraction(3),new Fraction(256),new Fraction(1930)},
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{new Fraction(3),new Fraction(7),new Fraction(6),new Fraction(8)}
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}; // 4th row = 1st + 2nd
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protected Fraction[][] detData = {
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{new Fraction(1),new Fraction(2),new Fraction(3)},
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{new Fraction(4),new Fraction(5),new Fraction(6)},
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{new Fraction(7),new Fraction(8),new Fraction(10)}
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protected Fraction[][] detData2 = { {new Fraction(1), new Fraction(3)}, {new Fraction(2), new Fraction(4)}};
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protected Fraction[] testVector = {new Fraction(1),new Fraction(2),new Fraction(3)};
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protected Fraction[] testVector2 = {new Fraction(1),new Fraction(2),new Fraction(3),new Fraction(4)};
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// submatrix accessor tests
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protected Fraction[][] subTestData = {
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{new Fraction(1), new Fraction(2), new Fraction(3), new Fraction(4)},
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{new Fraction(3, 2), new Fraction(5, 2), new Fraction(7, 2), new Fraction(9, 2)},
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{new Fraction(2), new Fraction(4), new Fraction(6), new Fraction(8)},
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{new Fraction(4), new Fraction(5), new Fraction(6), new Fraction(7)}
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protected Fraction[][] subRows02Cols13 = { {new Fraction(2), new Fraction(4)}, {new Fraction(4), new Fraction(8)}};
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protected Fraction[][] subRows03Cols12 = { {new Fraction(2), new Fraction(3)}, {new Fraction(5), new Fraction(6)}};
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protected Fraction[][] subRows03Cols123 = {
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{new Fraction(2), new Fraction(3), new Fraction(4)},
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{new Fraction(5), new Fraction(6), new Fraction(7)}
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// effective permutations
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protected Fraction[][] subRows20Cols123 = {
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{new Fraction(4), new Fraction(6), new Fraction(8)},
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{new Fraction(2), new Fraction(3), new Fraction(4)}
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protected Fraction[][] subRows31Cols31 = {{new Fraction(7), new Fraction(5)}, {new Fraction(9, 2), new Fraction(5, 2)}};
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protected Fraction[][] subRows01Cols23 = {{new Fraction(3),new Fraction(4)} , {new Fraction(7, 2), new Fraction(9, 2)}};
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protected Fraction[][] subRows23Cols00 = {{new Fraction(2)} , {new Fraction(4)}};
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protected Fraction[][] subRows00Cols33 = {{new Fraction(4)}};
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protected Fraction[][] subRow0 = {{new Fraction(1),new Fraction(2),new Fraction(3),new Fraction(4)}};
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protected Fraction[][] subRow3 = {{new Fraction(4),new Fraction(5),new Fraction(6),new Fraction(7)}};
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protected Fraction[][] subColumn1 = {{new Fraction(2)}, {new Fraction(5, 2)}, {new Fraction(4)}, {new Fraction(5)}};
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protected Fraction[][] subColumn3 = {{new Fraction(4)}, {new Fraction(9, 2)}, {new Fraction(8)}, {new Fraction(7)}};
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protected double entryTolerance = 10E-16;
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protected double normTolerance = 10E-14;
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public BlockFieldMatrixTest(String name) {
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public static Test suite() {
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TestSuite suite = new TestSuite(BlockFieldMatrixTest.class);
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suite.setName("BlockFieldMatrix<Fraction> Tests");
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/** test dimensions */
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public void testDimensions() {
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BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
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BlockFieldMatrix<Fraction> m2 = new BlockFieldMatrix<Fraction>(testData2);
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assertEquals("testData row dimension",3,m.getRowDimension());
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assertEquals("testData column dimension",3,m.getColumnDimension());
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assertTrue("testData is square",m.isSquare());
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assertEquals("testData2 row dimension",m2.getRowDimension(),2);
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assertEquals("testData2 column dimension",m2.getColumnDimension(),3);
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assertTrue("testData2 is not square",!m2.isSquare());
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/** test copy functions */
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public void testCopyFunctions() {
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Random r = new Random(66636328996002l);
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BlockFieldMatrix<Fraction> m1 = createRandomMatrix(r, 47, 83);
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BlockFieldMatrix<Fraction> m2 = new BlockFieldMatrix<Fraction>(m1.getData());
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assertEquals(m1, m2);
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BlockFieldMatrix<Fraction> m3 = new BlockFieldMatrix<Fraction>(testData);
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BlockFieldMatrix<Fraction> m4 = new BlockFieldMatrix<Fraction>(m3.getData());
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assertEquals(m3, m4);
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public void testAdd() {
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BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
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BlockFieldMatrix<Fraction> mInv = new BlockFieldMatrix<Fraction>(testDataInv);
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FieldMatrix<Fraction> mPlusMInv = m.add(mInv);
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Fraction[][] sumEntries = mPlusMInv.getData();
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for (int row = 0; row < m.getRowDimension(); row++) {
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for (int col = 0; col < m.getColumnDimension(); col++) {
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assertEquals(testDataPlusInv[row][col],sumEntries[row][col]);
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/** test add failure */
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public void testAddFail() {
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BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
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BlockFieldMatrix<Fraction> m2 = new BlockFieldMatrix<Fraction>(testData2);
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fail("IllegalArgumentException expected");
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} catch (IllegalArgumentException ex) {
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/** test m-n = m + -n */
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public void testPlusMinus() {
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BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
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BlockFieldMatrix<Fraction> m2 = new BlockFieldMatrix<Fraction>(testDataInv);
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TestUtils.assertEquals(m.subtract(m2), m2.scalarMultiply(new Fraction(-1)).add(m));
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m.subtract(new BlockFieldMatrix<Fraction>(testData2));
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fail("Expecting illegalArgumentException");
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} catch (IllegalArgumentException ex) {
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public void testMultiply() {
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BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
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BlockFieldMatrix<Fraction> mInv = new BlockFieldMatrix<Fraction>(testDataInv);
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BlockFieldMatrix<Fraction> identity = new BlockFieldMatrix<Fraction>(id);
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BlockFieldMatrix<Fraction> m2 = new BlockFieldMatrix<Fraction>(testData2);
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TestUtils.assertEquals(m.multiply(mInv), identity);
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TestUtils.assertEquals(mInv.multiply(m), identity);
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TestUtils.assertEquals(m.multiply(identity), m);
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TestUtils.assertEquals(identity.multiply(mInv), mInv);
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TestUtils.assertEquals(m2.multiply(identity), m2);
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m.multiply(new BlockFieldMatrix<Fraction>(bigSingular));
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fail("Expecting illegalArgumentException");
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} catch (IllegalArgumentException ex) {
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public void testSeveralBlocks() {
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FieldMatrix<Fraction> m =
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new BlockFieldMatrix<Fraction>(FractionField.getInstance(), 37, 41);
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for (int i = 0; i < m.getRowDimension(); ++i) {
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for (int j = 0; j < m.getColumnDimension(); ++j) {
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m.setEntry(i, j, new Fraction(i * 11 + j, 11));
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FieldMatrix<Fraction> mT = m.transpose();
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assertEquals(m.getRowDimension(), mT.getColumnDimension());
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assertEquals(m.getColumnDimension(), mT.getRowDimension());
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for (int i = 0; i < mT.getRowDimension(); ++i) {
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for (int j = 0; j < mT.getColumnDimension(); ++j) {
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assertEquals(m.getEntry(j, i), mT.getEntry(i, j));
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FieldMatrix<Fraction> mPm = m.add(m);
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for (int i = 0; i < mPm.getRowDimension(); ++i) {
266
for (int j = 0; j < mPm.getColumnDimension(); ++j) {
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assertEquals(m.getEntry(i, j).multiply(new Fraction(2)), mPm.getEntry(i, j));
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FieldMatrix<Fraction> mPmMm = mPm.subtract(m);
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for (int i = 0; i < mPmMm.getRowDimension(); ++i) {
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for (int j = 0; j < mPmMm.getColumnDimension(); ++j) {
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assertEquals(m.getEntry(i, j), mPmMm.getEntry(i, j));
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FieldMatrix<Fraction> mTm = mT.multiply(m);
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for (int i = 0; i < mTm.getRowDimension(); ++i) {
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for (int j = 0; j < mTm.getColumnDimension(); ++j) {
281
Fraction sum = Fraction.ZERO;
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for (int k = 0; k < mT.getColumnDimension(); ++k) {
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sum = sum.add(new Fraction(k * 11 + i, 11).multiply(new Fraction(k * 11 + j, 11)));
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assertEquals(sum, mTm.getEntry(i, j));
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FieldMatrix<Fraction> mmT = m.multiply(mT);
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for (int i = 0; i < mmT.getRowDimension(); ++i) {
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for (int j = 0; j < mmT.getColumnDimension(); ++j) {
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Fraction sum = Fraction.ZERO;
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for (int k = 0; k < m.getColumnDimension(); ++k) {
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sum = sum.add(new Fraction(i * 11 + k, 11).multiply(new Fraction(j * 11 + k, 11)));
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assertEquals(sum, mmT.getEntry(i, j));
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FieldMatrix<Fraction> sub1 = m.getSubMatrix(2, 9, 5, 20);
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for (int i = 0; i < sub1.getRowDimension(); ++i) {
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for (int j = 0; j < sub1.getColumnDimension(); ++j) {
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assertEquals(new Fraction((i + 2) * 11 + (j + 5), 11), sub1.getEntry(i, j));
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FieldMatrix<Fraction> sub2 = m.getSubMatrix(10, 12, 3, 40);
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for (int i = 0; i < sub2.getRowDimension(); ++i) {
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for (int j = 0; j < sub2.getColumnDimension(); ++j) {
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assertEquals(new Fraction((i + 10) * 11 + (j + 3), 11), sub2.getEntry(i, j));
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FieldMatrix<Fraction> sub3 = m.getSubMatrix(30, 34, 0, 5);
315
for (int i = 0; i < sub3.getRowDimension(); ++i) {
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for (int j = 0; j < sub3.getColumnDimension(); ++j) {
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assertEquals(new Fraction((i + 30) * 11 + (j + 0), 11), sub3.getEntry(i, j));
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FieldMatrix<Fraction> sub4 = m.getSubMatrix(30, 32, 32, 35);
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for (int i = 0; i < sub4.getRowDimension(); ++i) {
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for (int j = 0; j < sub4.getColumnDimension(); ++j) {
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assertEquals(new Fraction((i + 30) * 11 + (j + 32), 11), sub4.getEntry(i, j));
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//Additional Test for BlockFieldMatrix<Fraction>Test.testMultiply
332
private Fraction[][] d3 = new Fraction[][] {
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{new Fraction(1),new Fraction(2),new Fraction(3),new Fraction(4)},
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{new Fraction(5),new Fraction(6),new Fraction(7),new Fraction(8)}
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private Fraction[][] d4 = new Fraction[][] {
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private Fraction[][] d5 = new Fraction[][] {{new Fraction(30)},{new Fraction(70)}};
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public void testMultiply2() {
345
FieldMatrix<Fraction> m3 = new BlockFieldMatrix<Fraction>(d3);
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FieldMatrix<Fraction> m4 = new BlockFieldMatrix<Fraction>(d4);
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FieldMatrix<Fraction> m5 = new BlockFieldMatrix<Fraction>(d5);
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TestUtils.assertEquals(m3.multiply(m4), m5);
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public void testTrace() {
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FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(id);
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assertEquals(new Fraction(3),m.getTrace());
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m = new BlockFieldMatrix<Fraction>(testData2);
358
fail("Expecting NonSquareMatrixException");
359
} catch (NonSquareMatrixException ex) {
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/** test scalarAdd */
365
public void testScalarAdd() {
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FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
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TestUtils.assertEquals(new BlockFieldMatrix<Fraction>(testDataPlus2),
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m.scalarAdd(new Fraction(2)));
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public void testOperate() {
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FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(id);
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TestUtils.assertEquals(testVector, m.operate(testVector));
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TestUtils.assertEquals(testVector, m.operate(new ArrayFieldVector<Fraction>(testVector)).getData());
376
m = new BlockFieldMatrix<Fraction>(bigSingular);
378
m.operate(testVector);
379
fail("Expecting illegalArgumentException");
380
} catch (IllegalArgumentException ex) {
385
public void testOperateLarge() {
386
int p = (11 * BlockFieldMatrix.BLOCK_SIZE) / 10;
387
int q = (11 * BlockFieldMatrix.BLOCK_SIZE) / 10;
388
int r = BlockFieldMatrix.BLOCK_SIZE / 2;
389
Random random = new Random(111007463902334l);
390
FieldMatrix<Fraction> m1 = createRandomMatrix(random, p, q);
391
FieldMatrix<Fraction> m2 = createRandomMatrix(random, q, r);
392
FieldMatrix<Fraction> m1m2 = m1.multiply(m2);
393
for (int i = 0; i < r; ++i) {
394
TestUtils.assertEquals(m1m2.getColumn(i), m1.operate(m2.getColumn(i)));
398
public void testOperatePremultiplyLarge() {
399
int p = (11 * BlockFieldMatrix.BLOCK_SIZE) / 10;
400
int q = (11 * BlockFieldMatrix.BLOCK_SIZE) / 10;
401
int r = BlockFieldMatrix.BLOCK_SIZE / 2;
402
Random random = new Random(111007463902334l);
403
FieldMatrix<Fraction> m1 = createRandomMatrix(random, p, q);
404
FieldMatrix<Fraction> m2 = createRandomMatrix(random, q, r);
405
FieldMatrix<Fraction> m1m2 = m1.multiply(m2);
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for (int i = 0; i < p; ++i) {
407
TestUtils.assertEquals(m1m2.getRow(i), m2.preMultiply(m1.getRow(i)));
411
/** test issue MATH-209 */
412
public void testMath209() {
413
FieldMatrix<Fraction> a = new BlockFieldMatrix<Fraction>(new Fraction[][] {
414
{ new Fraction(1), new Fraction(2) },
415
{ new Fraction(3), new Fraction(4) },
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{ new Fraction(5), new Fraction(6) }
418
Fraction[] b = a.operate(new Fraction[] { new Fraction(1), new Fraction(1) });
419
assertEquals(a.getRowDimension(), b.length);
420
assertEquals( new Fraction(3), b[0]);
421
assertEquals( new Fraction(7), b[1]);
422
assertEquals(new Fraction(11), b[2]);
425
/** test transpose */
426
public void testTranspose() {
427
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
428
FieldMatrix<Fraction> mIT = new FieldLUDecompositionImpl<Fraction>(m).getSolver().getInverse().transpose();
429
FieldMatrix<Fraction> mTI = new FieldLUDecompositionImpl<Fraction>(m.transpose()).getSolver().getInverse();
430
TestUtils.assertEquals(mIT, mTI);
431
m = new BlockFieldMatrix<Fraction>(testData2);
432
FieldMatrix<Fraction> mt = new BlockFieldMatrix<Fraction>(testData2T);
433
TestUtils.assertEquals(mt, m.transpose());
436
/** test preMultiply by vector */
437
public void testPremultiplyVector() {
438
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
439
TestUtils.assertEquals(m.preMultiply(testVector), preMultTest);
440
TestUtils.assertEquals(m.preMultiply(new ArrayFieldVector<Fraction>(testVector).getData()),
442
m = new BlockFieldMatrix<Fraction>(bigSingular);
444
m.preMultiply(testVector);
445
fail("expecting IllegalArgumentException");
446
} catch (IllegalArgumentException ex) {
451
public void testPremultiply() {
452
FieldMatrix<Fraction> m3 = new BlockFieldMatrix<Fraction>(d3);
453
FieldMatrix<Fraction> m4 = new BlockFieldMatrix<Fraction>(d4);
454
FieldMatrix<Fraction> m5 = new BlockFieldMatrix<Fraction>(d5);
455
TestUtils.assertEquals(m4.preMultiply(m3), m5);
457
BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
458
BlockFieldMatrix<Fraction> mInv = new BlockFieldMatrix<Fraction>(testDataInv);
459
BlockFieldMatrix<Fraction> identity = new BlockFieldMatrix<Fraction>(id);
460
TestUtils.assertEquals(m.preMultiply(mInv), identity);
461
TestUtils.assertEquals(mInv.preMultiply(m), identity);
462
TestUtils.assertEquals(m.preMultiply(identity), m);
463
TestUtils.assertEquals(identity.preMultiply(mInv), mInv);
465
m.preMultiply(new BlockFieldMatrix<Fraction>(bigSingular));
466
fail("Expecting illegalArgumentException");
467
} catch (IllegalArgumentException ex) {
472
public void testGetVectors() {
473
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
474
TestUtils.assertEquals(m.getRow(0), testDataRow1);
475
TestUtils.assertEquals(m.getColumn(2), testDataCol3);
478
fail("expecting MatrixIndexException");
479
} catch (MatrixIndexException ex) {
484
fail("expecting MatrixIndexException");
485
} catch (MatrixIndexException ex) {
490
public void testGetEntry() {
491
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
492
assertEquals(m.getEntry(0,1),new Fraction(2));
495
fail ("Expecting MatrixIndexException");
496
} catch (MatrixIndexException ex) {
501
/** test examples in user guide */
502
public void testExamples() {
503
// Create a real matrix with two rows and three columns
504
Fraction[][] matrixData = {
505
{new Fraction(1),new Fraction(2),new Fraction(3)},
506
{new Fraction(2),new Fraction(5),new Fraction(3)}
508
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(matrixData);
509
// One more with three rows, two columns
510
Fraction[][] matrixData2 = {
511
{new Fraction(1),new Fraction(2)},
512
{new Fraction(2),new Fraction(5)},
513
{new Fraction(1), new Fraction(7)}
515
FieldMatrix<Fraction> n = new BlockFieldMatrix<Fraction>(matrixData2);
516
// Now multiply m by n
517
FieldMatrix<Fraction> p = m.multiply(n);
518
assertEquals(2, p.getRowDimension());
519
assertEquals(2, p.getColumnDimension());
521
FieldMatrix<Fraction> pInverse = new FieldLUDecompositionImpl<Fraction>(p).getSolver().getInverse();
522
assertEquals(2, pInverse.getRowDimension());
523
assertEquals(2, pInverse.getColumnDimension());
526
Fraction[][] coefficientsData = {
527
{new Fraction(2), new Fraction(3), new Fraction(-2)},
528
{new Fraction(-1), new Fraction(7), new Fraction(6)},
529
{new Fraction(4), new Fraction(-3), new Fraction(-5)}
531
FieldMatrix<Fraction> coefficients = new BlockFieldMatrix<Fraction>(coefficientsData);
532
Fraction[] constants = {new Fraction(1), new Fraction(-2), new Fraction(1)};
533
Fraction[] solution = new FieldLUDecompositionImpl<Fraction>(coefficients).getSolver().solve(constants);
534
assertEquals(new Fraction(2).multiply(solution[0]).
535
add(new Fraction(3).multiply(solution[1])).
536
subtract(new Fraction(2).multiply(solution[2])),
538
assertEquals(new Fraction(-1).multiply(solution[0]).
539
add(new Fraction(7).multiply(solution[1])).
540
add(new Fraction(6).multiply(solution[2])),
542
assertEquals(new Fraction(4).multiply(solution[0]).
543
subtract(new Fraction(3).multiply(solution[1])).
544
subtract(new Fraction(5).multiply(solution[2])),
549
// test submatrix accessors
550
public void testGetSubMatrix() {
551
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
552
checkGetSubMatrix(m, subRows23Cols00, 2 , 3 , 0, 0);
553
checkGetSubMatrix(m, subRows00Cols33, 0 , 0 , 3, 3);
554
checkGetSubMatrix(m, subRows01Cols23, 0 , 1 , 2, 3);
555
checkGetSubMatrix(m, subRows02Cols13, new int[] { 0, 2 }, new int[] { 1, 3 });
556
checkGetSubMatrix(m, subRows03Cols12, new int[] { 0, 3 }, new int[] { 1, 2 });
557
checkGetSubMatrix(m, subRows03Cols123, new int[] { 0, 3 }, new int[] { 1, 2, 3 });
558
checkGetSubMatrix(m, subRows20Cols123, new int[] { 2, 0 }, new int[] { 1, 2, 3 });
559
checkGetSubMatrix(m, subRows31Cols31, new int[] { 3, 1 }, new int[] { 3, 1 });
560
checkGetSubMatrix(m, subRows31Cols31, new int[] { 3, 1 }, new int[] { 3, 1 });
561
checkGetSubMatrix(m, null, 1, 0, 2, 4);
562
checkGetSubMatrix(m, null, -1, 1, 2, 2);
563
checkGetSubMatrix(m, null, 1, 0, 2, 2);
564
checkGetSubMatrix(m, null, 1, 0, 2, 4);
565
checkGetSubMatrix(m, null, new int[] {}, new int[] { 0 });
566
checkGetSubMatrix(m, null, new int[] { 0 }, new int[] { 4 });
569
private void checkGetSubMatrix(FieldMatrix<Fraction> m, Fraction[][] reference,
570
int startRow, int endRow, int startColumn, int endColumn) {
572
FieldMatrix<Fraction> sub = m.getSubMatrix(startRow, endRow, startColumn, endColumn);
573
if (reference != null) {
574
assertEquals(new BlockFieldMatrix<Fraction>(reference), sub);
576
fail("Expecting MatrixIndexException");
578
} catch (MatrixIndexException e) {
579
if (reference != null) {
585
private void checkGetSubMatrix(FieldMatrix<Fraction> m, Fraction[][] reference,
586
int[] selectedRows, int[] selectedColumns) {
588
FieldMatrix<Fraction> sub = m.getSubMatrix(selectedRows, selectedColumns);
589
if (reference != null) {
590
assertEquals(new BlockFieldMatrix<Fraction>(reference), sub);
592
fail("Expecting MatrixIndexException");
594
} catch (MatrixIndexException e) {
595
if (reference != null) {
601
public void testGetSetMatrixLarge() {
602
int n = 3 * BlockFieldMatrix.BLOCK_SIZE;
603
FieldMatrix<Fraction> m =
604
new BlockFieldMatrix<Fraction>(FractionField.getInstance(), n, n);
605
FieldMatrix<Fraction> sub =
606
new BlockFieldMatrix<Fraction>(FractionField.getInstance(), n - 4, n - 4).scalarAdd(new Fraction(1));
608
m.setSubMatrix(sub.getData(), 2, 2);
609
for (int i = 0; i < n; ++i) {
610
for (int j = 0; j < n; ++j) {
611
if ((i < 2) || (i > n - 3) || (j < 2) || (j > n - 3)) {
612
assertEquals(new Fraction(0), m.getEntry(i, j));
614
assertEquals(new Fraction(1), m.getEntry(i, j));
618
assertEquals(sub, m.getSubMatrix(2, n - 3, 2, n - 3));
622
public void testCopySubMatrix() {
623
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
624
checkCopy(m, subRows23Cols00, 2 , 3 , 0, 0);
625
checkCopy(m, subRows00Cols33, 0 , 0 , 3, 3);
626
checkCopy(m, subRows01Cols23, 0 , 1 , 2, 3);
627
checkCopy(m, subRows02Cols13, new int[] { 0, 2 }, new int[] { 1, 3 });
628
checkCopy(m, subRows03Cols12, new int[] { 0, 3 }, new int[] { 1, 2 });
629
checkCopy(m, subRows03Cols123, new int[] { 0, 3 }, new int[] { 1, 2, 3 });
630
checkCopy(m, subRows20Cols123, new int[] { 2, 0 }, new int[] { 1, 2, 3 });
631
checkCopy(m, subRows31Cols31, new int[] { 3, 1 }, new int[] { 3, 1 });
632
checkCopy(m, subRows31Cols31, new int[] { 3, 1 }, new int[] { 3, 1 });
634
checkCopy(m, null, 1, 0, 2, 4);
635
checkCopy(m, null, -1, 1, 2, 2);
636
checkCopy(m, null, 1, 0, 2, 2);
637
checkCopy(m, null, 1, 0, 2, 4);
638
checkCopy(m, null, new int[] {}, new int[] { 0 });
639
checkCopy(m, null, new int[] { 0 }, new int[] { 4 });
642
private void checkCopy(FieldMatrix<Fraction> m, Fraction[][] reference,
643
int startRow, int endRow, int startColumn, int endColumn) {
645
Fraction[][] sub = (reference == null) ?
647
new Fraction[reference.length][reference[0].length];
648
m.copySubMatrix(startRow, endRow, startColumn, endColumn, sub);
649
if (reference != null) {
650
assertEquals(new BlockFieldMatrix<Fraction>(reference), new BlockFieldMatrix<Fraction>(sub));
652
fail("Expecting MatrixIndexException");
654
} catch (MatrixIndexException e) {
655
if (reference != null) {
661
private void checkCopy(FieldMatrix<Fraction> m, Fraction[][] reference,
662
int[] selectedRows, int[] selectedColumns) {
664
Fraction[][] sub = (reference == null) ?
666
new Fraction[reference.length][reference[0].length];
667
m.copySubMatrix(selectedRows, selectedColumns, sub);
668
if (reference != null) {
669
assertEquals(new BlockFieldMatrix<Fraction>(reference), new BlockFieldMatrix<Fraction>(sub));
671
fail("Expecting MatrixIndexException");
673
} catch (MatrixIndexException e) {
674
if (reference != null) {
680
public void testGetRowMatrix() {
681
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
682
FieldMatrix<Fraction> mRow0 = new BlockFieldMatrix<Fraction>(subRow0);
683
FieldMatrix<Fraction> mRow3 = new BlockFieldMatrix<Fraction>(subRow3);
684
assertEquals("Row0", mRow0, m.getRowMatrix(0));
685
assertEquals("Row3", mRow3, m.getRowMatrix(3));
688
fail("Expecting MatrixIndexException");
689
} catch (MatrixIndexException ex) {
694
fail("Expecting MatrixIndexException");
695
} catch (MatrixIndexException ex) {
700
public void testSetRowMatrix() {
701
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
702
FieldMatrix<Fraction> mRow3 = new BlockFieldMatrix<Fraction>(subRow3);
703
assertNotSame(mRow3, m.getRowMatrix(0));
704
m.setRowMatrix(0, mRow3);
705
assertEquals(mRow3, m.getRowMatrix(0));
707
m.setRowMatrix(-1, mRow3);
708
fail("Expecting MatrixIndexException");
709
} catch (MatrixIndexException ex) {
713
m.setRowMatrix(0, m);
714
fail("Expecting InvalidMatrixException");
715
} catch (InvalidMatrixException ex) {
720
public void testGetSetRowMatrixLarge() {
721
int n = 3 * BlockFieldMatrix.BLOCK_SIZE;
722
FieldMatrix<Fraction> m =
723
new BlockFieldMatrix<Fraction>(FractionField.getInstance(), n, n);
724
FieldMatrix<Fraction> sub =
725
new BlockFieldMatrix<Fraction>(FractionField.getInstance(), 1, n).scalarAdd(new Fraction(1));
727
m.setRowMatrix(2, sub);
728
for (int i = 0; i < n; ++i) {
729
for (int j = 0; j < n; ++j) {
731
assertEquals(new Fraction(0), m.getEntry(i, j));
733
assertEquals(new Fraction(1), m.getEntry(i, j));
737
assertEquals(sub, m.getRowMatrix(2));
741
public void testGetColumnMatrix() {
742
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
743
FieldMatrix<Fraction> mColumn1 = new BlockFieldMatrix<Fraction>(subColumn1);
744
FieldMatrix<Fraction> mColumn3 = new BlockFieldMatrix<Fraction>(subColumn3);
745
assertEquals(mColumn1, m.getColumnMatrix(1));
746
assertEquals(mColumn3, m.getColumnMatrix(3));
748
m.getColumnMatrix(-1);
749
fail("Expecting MatrixIndexException");
750
} catch (MatrixIndexException ex) {
754
m.getColumnMatrix(4);
755
fail("Expecting MatrixIndexException");
756
} catch (MatrixIndexException ex) {
761
public void testSetColumnMatrix() {
762
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
763
FieldMatrix<Fraction> mColumn3 = new BlockFieldMatrix<Fraction>(subColumn3);
764
assertNotSame(mColumn3, m.getColumnMatrix(1));
765
m.setColumnMatrix(1, mColumn3);
766
assertEquals(mColumn3, m.getColumnMatrix(1));
768
m.setColumnMatrix(-1, mColumn3);
769
fail("Expecting MatrixIndexException");
770
} catch (MatrixIndexException ex) {
774
m.setColumnMatrix(0, m);
775
fail("Expecting InvalidMatrixException");
776
} catch (InvalidMatrixException ex) {
781
public void testGetSetColumnMatrixLarge() {
782
int n = 3 * BlockFieldMatrix.BLOCK_SIZE;
783
FieldMatrix<Fraction> m =
784
new BlockFieldMatrix<Fraction>(FractionField.getInstance(), n, n);
785
FieldMatrix<Fraction> sub =
786
new BlockFieldMatrix<Fraction>(FractionField.getInstance(), n, 1).scalarAdd(new Fraction(1));
788
m.setColumnMatrix(2, sub);
789
for (int i = 0; i < n; ++i) {
790
for (int j = 0; j < n; ++j) {
792
assertEquals(new Fraction(0), m.getEntry(i, j));
794
assertEquals(new Fraction(1), m.getEntry(i, j));
798
assertEquals(sub, m.getColumnMatrix(2));
802
public void testGetRowVector() {
803
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
804
FieldVector<Fraction> mRow0 = new ArrayFieldVector<Fraction>(subRow0[0]);
805
FieldVector<Fraction> mRow3 = new ArrayFieldVector<Fraction>(subRow3[0]);
806
assertEquals(mRow0, m.getRowVector(0));
807
assertEquals(mRow3, m.getRowVector(3));
810
fail("Expecting MatrixIndexException");
811
} catch (MatrixIndexException ex) {
816
fail("Expecting MatrixIndexException");
817
} catch (MatrixIndexException ex) {
822
public void testSetRowVector() {
823
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
824
FieldVector<Fraction> mRow3 = new ArrayFieldVector<Fraction>(subRow3[0]);
825
assertNotSame(mRow3, m.getRowMatrix(0));
826
m.setRowVector(0, mRow3);
827
assertEquals(mRow3, m.getRowVector(0));
829
m.setRowVector(-1, mRow3);
830
fail("Expecting MatrixIndexException");
831
} catch (MatrixIndexException ex) {
835
m.setRowVector(0, new ArrayFieldVector<Fraction>(FractionField.getInstance(), 5));
836
fail("Expecting InvalidMatrixException");
837
} catch (InvalidMatrixException ex) {
842
public void testGetSetRowVectorLarge() {
843
int n = 3 * BlockFieldMatrix.BLOCK_SIZE;
844
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), n, n);
845
FieldVector<Fraction> sub = new ArrayFieldVector<Fraction>(n, new Fraction(1));
847
m.setRowVector(2, sub);
848
for (int i = 0; i < n; ++i) {
849
for (int j = 0; j < n; ++j) {
851
assertEquals(new Fraction(0), m.getEntry(i, j));
853
assertEquals(new Fraction(1), m.getEntry(i, j));
857
assertEquals(sub, m.getRowVector(2));
861
public void testGetColumnVector() {
862
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
863
FieldVector<Fraction> mColumn1 = columnToVector(subColumn1);
864
FieldVector<Fraction> mColumn3 = columnToVector(subColumn3);
865
assertEquals(mColumn1, m.getColumnVector(1));
866
assertEquals(mColumn3, m.getColumnVector(3));
868
m.getColumnVector(-1);
869
fail("Expecting MatrixIndexException");
870
} catch (MatrixIndexException ex) {
874
m.getColumnVector(4);
875
fail("Expecting MatrixIndexException");
876
} catch (MatrixIndexException ex) {
881
public void testSetColumnVector() {
882
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
883
FieldVector<Fraction> mColumn3 = columnToVector(subColumn3);
884
assertNotSame(mColumn3, m.getColumnVector(1));
885
m.setColumnVector(1, mColumn3);
886
assertEquals(mColumn3, m.getColumnVector(1));
888
m.setColumnVector(-1, mColumn3);
889
fail("Expecting MatrixIndexException");
890
} catch (MatrixIndexException ex) {
894
m.setColumnVector(0, new ArrayFieldVector<Fraction>(FractionField.getInstance(), 5));
895
fail("Expecting InvalidMatrixException");
896
} catch (InvalidMatrixException ex) {
901
public void testGetSetColumnVectorLarge() {
902
int n = 3 * BlockFieldMatrix.BLOCK_SIZE;
903
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), n, n);
904
FieldVector<Fraction> sub = new ArrayFieldVector<Fraction>(n, new Fraction(1));
906
m.setColumnVector(2, sub);
907
for (int i = 0; i < n; ++i) {
908
for (int j = 0; j < n; ++j) {
910
assertEquals(new Fraction(0), m.getEntry(i, j));
912
assertEquals(new Fraction(1), m.getEntry(i, j));
916
assertEquals(sub, m.getColumnVector(2));
920
private FieldVector<Fraction> columnToVector(Fraction[][] column) {
921
Fraction[] data = new Fraction[column.length];
922
for (int i = 0; i < data.length; ++i) {
923
data[i] = column[i][0];
925
return new ArrayFieldVector<Fraction>(data, false);
928
public void testGetRow() {
929
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
930
checkArrays(subRow0[0], m.getRow(0));
931
checkArrays(subRow3[0], m.getRow(3));
934
fail("Expecting MatrixIndexException");
935
} catch (MatrixIndexException ex) {
940
fail("Expecting MatrixIndexException");
941
} catch (MatrixIndexException ex) {
946
public void testSetRow() {
947
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
948
assertTrue(subRow3[0][0] != m.getRow(0)[0]);
949
m.setRow(0, subRow3[0]);
950
checkArrays(subRow3[0], m.getRow(0));
952
m.setRow(-1, subRow3[0]);
953
fail("Expecting MatrixIndexException");
954
} catch (MatrixIndexException ex) {
958
m.setRow(0, new Fraction[5]);
959
fail("Expecting InvalidMatrixException");
960
} catch (InvalidMatrixException ex) {
965
public void testGetSetRowLarge() {
966
int n = 3 * BlockFieldMatrix.BLOCK_SIZE;
967
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), n, n);
968
Fraction[] sub = new Fraction[n];
969
Arrays.fill(sub, new Fraction(1));
972
for (int i = 0; i < n; ++i) {
973
for (int j = 0; j < n; ++j) {
975
assertEquals(new Fraction(0), m.getEntry(i, j));
977
assertEquals(new Fraction(1), m.getEntry(i, j));
981
checkArrays(sub, m.getRow(2));
985
public void testGetColumn() {
986
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
987
Fraction[] mColumn1 = columnToArray(subColumn1);
988
Fraction[] mColumn3 = columnToArray(subColumn3);
989
checkArrays(mColumn1, m.getColumn(1));
990
checkArrays(mColumn3, m.getColumn(3));
993
fail("Expecting MatrixIndexException");
994
} catch (MatrixIndexException ex) {
999
fail("Expecting MatrixIndexException");
1000
} catch (MatrixIndexException ex) {
1005
public void testSetColumn() {
1006
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(subTestData);
1007
Fraction[] mColumn3 = columnToArray(subColumn3);
1008
assertTrue(mColumn3[0] != m.getColumn(1)[0]);
1009
m.setColumn(1, mColumn3);
1010
checkArrays(mColumn3, m.getColumn(1));
1012
m.setColumn(-1, mColumn3);
1013
fail("Expecting MatrixIndexException");
1014
} catch (MatrixIndexException ex) {
1018
m.setColumn(0, new Fraction[5]);
1019
fail("Expecting InvalidMatrixException");
1020
} catch (InvalidMatrixException ex) {
1025
public void testGetSetColumnLarge() {
1026
int n = 3 * BlockFieldMatrix.BLOCK_SIZE;
1027
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), n, n);
1028
Fraction[] sub = new Fraction[n];
1029
Arrays.fill(sub, new Fraction(1));
1031
m.setColumn(2, sub);
1032
for (int i = 0; i < n; ++i) {
1033
for (int j = 0; j < n; ++j) {
1035
assertEquals(new Fraction(0), m.getEntry(i, j));
1037
assertEquals(new Fraction(1), m.getEntry(i, j));
1041
checkArrays(sub, m.getColumn(2));
1045
private Fraction[] columnToArray(Fraction[][] column) {
1046
Fraction[] data = new Fraction[column.length];
1047
for (int i = 0; i < data.length; ++i) {
1048
data[i] = column[i][0];
1053
private void checkArrays(Fraction[] expected, Fraction[] actual) {
1054
assertEquals(expected.length, actual.length);
1055
for (int i = 0; i < expected.length; ++i) {
1056
assertEquals(expected[i], actual[i]);
1060
public void testEqualsAndHashCode() {
1061
BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
1062
BlockFieldMatrix<Fraction> m1 = (BlockFieldMatrix<Fraction>) m.copy();
1063
BlockFieldMatrix<Fraction> mt = (BlockFieldMatrix<Fraction>) m.transpose();
1064
assertTrue(m.hashCode() != mt.hashCode());
1065
assertEquals(m.hashCode(), m1.hashCode());
1067
assertEquals(m, m1);
1068
assertFalse(m.equals(null));
1069
assertFalse(m.equals(mt));
1070
assertFalse(m.equals(new BlockFieldMatrix<Fraction>(bigSingular)));
1073
public void testToString() {
1074
BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
1075
assertEquals("BlockFieldMatrix{{1,2,3},{2,5,3},{1,0,8}}", m.toString());
1078
public void testSetSubMatrix() throws Exception {
1079
BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
1080
m.setSubMatrix(detData2,1,1);
1081
FieldMatrix<Fraction> expected = new BlockFieldMatrix<Fraction>
1082
(new Fraction[][] {{new Fraction(1),new Fraction(2),new Fraction(3)},{new Fraction(2),new Fraction(1),new Fraction(3)},{new Fraction(1),new Fraction(2),new Fraction(4)}});
1083
assertEquals(expected, m);
1085
m.setSubMatrix(detData2,0,0);
1086
expected = new BlockFieldMatrix<Fraction>
1087
(new Fraction[][] {{new Fraction(1),new Fraction(3),new Fraction(3)},{new Fraction(2),new Fraction(4),new Fraction(3)},{new Fraction(1),new Fraction(2),new Fraction(4)}});
1088
assertEquals(expected, m);
1090
m.setSubMatrix(testDataPlus2,0,0);
1091
expected = new BlockFieldMatrix<Fraction>
1092
(new Fraction[][] {{new Fraction(3),new Fraction(4),new Fraction(5)},{new Fraction(4),new Fraction(7),new Fraction(5)},{new Fraction(3),new Fraction(2),new Fraction(10)}});
1093
assertEquals(expected, m);
1096
BlockFieldMatrix<Fraction> matrix =
1097
new BlockFieldMatrix<Fraction>(new Fraction[][] {
1098
{new Fraction(1), new Fraction(2), new Fraction(3), new Fraction(4)},
1099
{new Fraction(5), new Fraction(6), new Fraction(7), new Fraction(8)},
1100
{new Fraction(9), new Fraction(0), new Fraction(1) , new Fraction(2)}
1102
matrix.setSubMatrix(new Fraction[][] {
1103
{new Fraction(3), new Fraction(4)},
1104
{new Fraction(5), new Fraction(6)}
1107
new BlockFieldMatrix<Fraction>(new Fraction[][] {
1108
{new Fraction(1), new Fraction(2), new Fraction(3),new Fraction(4)},
1109
{new Fraction(5), new Fraction(3), new Fraction(4), new Fraction(8)},
1110
{new Fraction(9), new Fraction(5) ,new Fraction(6), new Fraction(2)}
1112
assertEquals(expected, matrix);
1114
// dimension overflow
1116
m.setSubMatrix(testData,1,1);
1117
fail("expecting MatrixIndexException");
1118
} catch (MatrixIndexException e) {
1121
// dimension underflow
1123
m.setSubMatrix(testData,-1,1);
1124
fail("expecting MatrixIndexException");
1125
} catch (MatrixIndexException e) {
1129
m.setSubMatrix(testData,1,-1);
1130
fail("expecting MatrixIndexException");
1131
} catch (MatrixIndexException e) {
1137
m.setSubMatrix(null,1,1);
1138
fail("expecting NullPointerException");
1139
} catch (NullPointerException e) {
1145
m.setSubMatrix(new Fraction[][] {{new Fraction(1)}, {new Fraction(2), new Fraction(3)}}, 0, 0);
1146
fail("expecting IllegalArgumentException");
1147
} catch (IllegalArgumentException e) {
1153
m.setSubMatrix(new Fraction[][] {{}}, 0, 0);
1154
fail("expecting IllegalArgumentException");
1155
} catch (IllegalArgumentException e) {
1161
public void testWalk() {
1165
FieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
1166
m.walkInRowOrder(new SetVisitor());
1167
GetVisitor getVisitor = new GetVisitor();
1168
m.walkInOptimizedOrder(getVisitor);
1169
assertEquals(rows * columns, getVisitor.getCount());
1171
m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
1172
m.walkInRowOrder(new SetVisitor(), 1, rows - 2, 1, columns - 2);
1173
getVisitor = new GetVisitor();
1174
m.walkInOptimizedOrder(getVisitor, 1, rows - 2, 1, columns - 2);
1175
assertEquals((rows - 2) * (columns - 2), getVisitor.getCount());
1176
for (int i = 0; i < rows; ++i) {
1177
assertEquals(new Fraction(0), m.getEntry(i, 0));
1178
assertEquals(new Fraction(0), m.getEntry(i, columns - 1));
1180
for (int j = 0; j < columns; ++j) {
1181
assertEquals(new Fraction(0), m.getEntry(0, j));
1182
assertEquals(new Fraction(0), m.getEntry(rows - 1, j));
1185
m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
1186
m.walkInColumnOrder(new SetVisitor());
1187
getVisitor = new GetVisitor();
1188
m.walkInOptimizedOrder(getVisitor);
1189
assertEquals(rows * columns, getVisitor.getCount());
1191
m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
1192
m.walkInColumnOrder(new SetVisitor(), 1, rows - 2, 1, columns - 2);
1193
getVisitor = new GetVisitor();
1194
m.walkInOptimizedOrder(getVisitor, 1, rows - 2, 1, columns - 2);
1195
assertEquals((rows - 2) * (columns - 2), getVisitor.getCount());
1196
for (int i = 0; i < rows; ++i) {
1197
assertEquals(new Fraction(0), m.getEntry(i, 0));
1198
assertEquals(new Fraction(0), m.getEntry(i, columns - 1));
1200
for (int j = 0; j < columns; ++j) {
1201
assertEquals(new Fraction(0), m.getEntry(0, j));
1202
assertEquals(new Fraction(0), m.getEntry(rows - 1, j));
1205
m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
1206
m.walkInOptimizedOrder(new SetVisitor());
1207
getVisitor = new GetVisitor();
1208
m.walkInRowOrder(getVisitor);
1209
assertEquals(rows * columns, getVisitor.getCount());
1211
m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
1212
m.walkInOptimizedOrder(new SetVisitor(), 1, rows - 2, 1, columns - 2);
1213
getVisitor = new GetVisitor();
1214
m.walkInRowOrder(getVisitor, 1, rows - 2, 1, columns - 2);
1215
assertEquals((rows - 2) * (columns - 2), getVisitor.getCount());
1216
for (int i = 0; i < rows; ++i) {
1217
assertEquals(new Fraction(0), m.getEntry(i, 0));
1218
assertEquals(new Fraction(0), m.getEntry(i, columns - 1));
1220
for (int j = 0; j < columns; ++j) {
1221
assertEquals(new Fraction(0), m.getEntry(0, j));
1222
assertEquals(new Fraction(0), m.getEntry(rows - 1, j));
1225
m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
1226
m.walkInOptimizedOrder(new SetVisitor());
1227
getVisitor = new GetVisitor();
1228
m.walkInColumnOrder(getVisitor);
1229
assertEquals(rows * columns, getVisitor.getCount());
1231
m = new BlockFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
1232
m.walkInOptimizedOrder(new SetVisitor(), 1, rows - 2, 1, columns - 2);
1233
getVisitor = new GetVisitor();
1234
m.walkInColumnOrder(getVisitor, 1, rows - 2, 1, columns - 2);
1235
assertEquals((rows - 2) * (columns - 2), getVisitor.getCount());
1236
for (int i = 0; i < rows; ++i) {
1237
assertEquals(new Fraction(0), m.getEntry(i, 0));
1238
assertEquals(new Fraction(0), m.getEntry(i, columns - 1));
1240
for (int j = 0; j < columns; ++j) {
1241
assertEquals(new Fraction(0), m.getEntry(0, j));
1242
assertEquals(new Fraction(0), m.getEntry(rows - 1, j));
1247
public void testSerial() {
1248
BlockFieldMatrix<Fraction> m = new BlockFieldMatrix<Fraction>(testData);
1249
assertEquals(m,TestUtils.serializeAndRecover(m));
1252
private static class SetVisitor extends DefaultFieldMatrixChangingVisitor<Fraction> {
1253
public SetVisitor() {
1254
super(Fraction.ZERO);
1257
public Fraction visit(int i, int j, Fraction value) {
1258
return new Fraction(i * 11 + j, 11);
1262
private static class GetVisitor extends DefaultFieldMatrixPreservingVisitor<Fraction> {
1264
public GetVisitor() {
1265
super(Fraction.ZERO);
1269
public void visit(int i, int j, Fraction value) {
1271
assertEquals(new Fraction(i * 11 + j, 11), value);
1273
public int getCount() {
1278
private BlockFieldMatrix<Fraction> createRandomMatrix(Random r, int rows, int columns) {
1279
BlockFieldMatrix<Fraction> m =
1280
new BlockFieldMatrix<Fraction>(FractionField.getInstance(), rows, columns);
1281
for (int i = 0; i < rows; ++i) {
1282
for (int j = 0; j < columns; ++j) {
1283
int p = r.nextInt(20) - 10;
1284
int q = r.nextInt(20) - 10;
1288
m.setEntry(i, j, new Fraction(p, q));