2 * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$)
3 * Copyright (C) $$Year-Rel$$ The Jalview Authors
5 * This file is part of Jalview.
7 * Jalview is free software: you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation, either version 3
10 * of the License, or (at your option) any later version.
12 * Jalview is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty
14 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR
15 * PURPOSE. See the GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with Jalview. If not, see <http://www.gnu.org/licenses/>.
19 * The Jalview Authors are detailed in the 'AUTHORS' file.
21 package jalview.ext.android;
23 import static org.testng.Assert.assertEquals;
25 import org.testng.annotations.Test;
27 public class SparseDoubleArrayTest
31 public void testConstructor()
33 double[] d = new double[] { 0d, 0d, 1.2d, 0d, 0d, 3.4d };
34 SparseDoubleArray s = new SparseDoubleArray(d);
35 for (int i = 0; i < d.length; i++)
37 assertEquals(s.get(i), d[i], "At [" + i + "]");
44 double[] d = new double[] { 0d, 0d, 1.2d, 0d, 0d, 3.4d };
45 SparseDoubleArray s = new SparseDoubleArray(d);
46 // add to zero (absent)
48 assertEquals(s.get(0), 3.2d);
51 assertEquals(s.get(0), 5.7d);
54 assertEquals(s.get(2), -4.1d);
57 assertEquals(s.get(12), 9.8d);
61 public void testDivide()
63 double delta = 1.0e-10;
64 double[] d = new double[] { 0d, 2.4d, 1.2d, 0d, -4.8d, -3.6d };
65 SparseDoubleArray s = new SparseDoubleArray(d);
66 assertEquals(s.divide(0, 1d), 0d); // no such entry
67 assertEquals(s.divide(2, 0d), 0d); // zero divisor
68 assertEquals(s.divide(1, 2d), 1.2d, delta); // + / +
69 assertEquals(s.divide(2, -2d), -0.6d, delta); // + / -
70 assertEquals(s.divide(4, 3d), -1.6d, delta); // - / +
71 assertEquals(s.divide(5, -3d), 1.2d, delta); // - / -