/*
* Copyright (c) 2009-2012, Peter Abeles. All Rights Reserved.
*
* This file is part of Efficient Java Matrix Library (EJML).
*
* EJML 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 3
* of the License, or (at your option) any later version.
*
* EJML 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 EJML. If not, see <http://www.gnu.org/licenses/>.
*/
package org.ejml;
import org.ejml.data.DenseMatrix64F;
import org.junit.Test;
import java.util.Random;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
/**
* @author Peter Abeles
*/
public class TestUtilEjml {
Random rand = new Random(23423);
@Test
public void max_array() {
double a[] = new double[]{-1,2,3,4,5,6,3,4,5,7,8,2,3,-5,-6};
assertTrue(8==UtilEjml.max(a,0,a.length));
assertTrue(5==UtilEjml.max(a,6,3));
}
/**
* Provide it a couple of different strings to parse. Then compare
* the results against the expect answer
*/
@Test
public void testParseMatrix() {
String a = "-0.779094 1.682750\n" +
" 1.304014 -1.880739\n";
DenseMatrix64F m = UtilEjml.parseMatrix(a,2);
assertEquals(2,m.numCols);
assertEquals(2,m.numRows);
assertEquals(-0.779094 , m.get(0,0) , 1e-5);
assertEquals(1.682750 , m.get(0,1) , 1e-5);
assertEquals(1.304014 , m.get(1,0) , 1e-5);
assertEquals(-1.880739 , m.get(1,1) , 1e-5);
// give it a matrix with a space in the first element, see if that screws it up
a = " -0.779094 1.682750 5\n" +
" 1.304014 -1.880739 8\n";
m = UtilEjml.parseMatrix(a,3);
assertEquals(3,m.numCols);
assertEquals(2,m.numRows);
assertEquals(-0.779094 , m.get(0,0) , 1e-5);
}
}