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Java example source code file (OpenMapRealMatrixTest.java)
The OpenMapRealMatrixTest.java Java example source code/* * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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. */ package org.apache.commons.math3.linear; import org.apache.commons.math3.exception.NumberIsTooLargeException; import org.junit.Assert; import org.junit.Test; public final class OpenMapRealMatrixTest { @Test(expected=NumberIsTooLargeException.class) public void testMath679() { new OpenMapRealMatrix(3, Integer.MAX_VALUE); } @Test public void testMath870() { // Caveat: This implementation assumes that, for any {@code x}, // the equality {@code x * 0d == 0d} holds. But it is is not true for // {@code NaN}. Moreover, zero entries will lose their sign. // Some operations (that involve {@code NaN} and/or infinities) may // thus give incorrect results. OpenMapRealMatrix a = new OpenMapRealMatrix(3, 3); OpenMapRealMatrix x = new OpenMapRealMatrix(3, 1); x.setEntry(0, 0, Double.NaN); x.setEntry(2, 0, Double.NEGATIVE_INFINITY); OpenMapRealMatrix b = a.multiply(x); for (int i = 0; i < b.getRowDimension(); ++i) { for (int j = 0; j < b.getColumnDimension(); ++j) { // NaNs and infinities have disappeared, this is a limitation of our implementation Assert.assertEquals(0.0, b.getEntry(i, j), 1.0e-20); } } } } Other Java examples (source code examples)Here is a short list of links related to this Java OpenMapRealMatrixTest.java source code file: |
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