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Commons Math example source code file (SumLogTest.java)
The Commons Math SumLogTest.java 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.math.stat.descriptive.summary; import org.apache.commons.math.stat.descriptive.StorelessUnivariateStatisticAbstractTest; import org.apache.commons.math.stat.descriptive.UnivariateStatistic; /** * Test cases for the {@link UnivariateStatistic} class. * @version $Revision: 902201 $ $Date: 2010-01-22 13:18:16 -0500 (Fri, 22 Jan 2010) $ */ public class SumLogTest extends StorelessUnivariateStatisticAbstractTest{ protected SumOfLogs stat; /** * @param name */ public SumLogTest(String name) { super(name); } /** * {@inheritDoc} */ @Override public UnivariateStatistic getUnivariateStatistic() { return new SumOfLogs(); } /** * {@inheritDoc} */ @Override public double expectedValue() { return this.sumLog; } public void testSpecialValues() { SumOfLogs sum = new SumOfLogs(); // empty assertTrue(Double.isNaN(sum.getResult())); // finite data sum.increment(1d); assertFalse(Double.isNaN(sum.getResult())); // add negative infinity sum.increment(0d); assertEquals(Double.NEGATIVE_INFINITY, sum.getResult(), 0); // add positive infinity -- should make NaN sum.increment(Double.POSITIVE_INFINITY); assertTrue(Double.isNaN(sum.getResult())); // clear sum.clear(); assertTrue(Double.isNaN(sum.getResult())); // positive infinity by itself sum.increment(Double.POSITIVE_INFINITY); assertEquals(Double.POSITIVE_INFINITY, sum.getResult(), 0); // negative value -- should make NaN sum.increment(-2d); assertTrue(Double.isNaN(sum.getResult())); } } Other Commons Math examples (source code examples)Here is a short list of links related to this Commons Math SumLogTest.java source code file: |
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