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Commons Math example source code file (BinaryFunctionTest.java)
The Commons Math BinaryFunctionTest.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.analysis; import org.apache.commons.math.FunctionEvaluationException; import org.junit.Assert; import org.junit.Test; public class BinaryFunctionTest { @Test public void testAdd() throws FunctionEvaluationException { Assert.assertEquals(5.0, BinaryFunction.ADD.value(2, 3), 1.0e-15); Assert.assertEquals(0.0, BinaryFunction.ADD.value(-1, 1), 1.0e-15); } @Test public void testSubtract() throws FunctionEvaluationException { Assert.assertEquals(-1.0, BinaryFunction.SUBTRACT.value(2, 3), 1.0e-15); Assert.assertEquals(-2.0, BinaryFunction.SUBTRACT.value(-1, 1), 1.0e-15); } @Test public void testMultiply() throws FunctionEvaluationException { Assert.assertEquals(6.0, BinaryFunction.MULTIPLY.value(2, 3), 1.0e-15); Assert.assertEquals(-1.0, BinaryFunction.MULTIPLY.value(-1, 1), 1.0e-15); } @Test public void testDivide() throws FunctionEvaluationException { Assert.assertEquals(1.5, BinaryFunction.DIVIDE.value(3, 2), 1.0e-15); Assert.assertEquals(-1.0, BinaryFunction.DIVIDE.value(-1, 1), 1.0e-15); } @Test public void testPow() throws FunctionEvaluationException { Assert.assertEquals(9.0, BinaryFunction.POW.value(3, 2), 1.0e-15); Assert.assertEquals(-1.0, BinaryFunction.POW.value(-1, 1), 1.0e-15); } @Test public void testAtan2() throws FunctionEvaluationException { Assert.assertEquals(Math.PI / 4, BinaryFunction.ATAN2.value(1, 1), 1.0e-15); Assert.assertEquals(-Math.PI / 4, BinaryFunction.ATAN2.value(-1, 1), 1.0e-15); } @Test public void testFix1st() throws FunctionEvaluationException { ComposableFunction f = BinaryFunction.POW.fix1stArgument(2); for (double x = 0.0; x < 1.0; x += 0.01) { Assert.assertEquals(Math.pow(2.0, x), f.value(x), 1.0e-15); } } @Test public void testFix2nd() throws FunctionEvaluationException { ComposableFunction f = BinaryFunction.POW.fix2ndArgument(2); for (double y = 0.0; y < 1.0; y += 0.01) { Assert.assertEquals(y * y, f.value(y), 1.0e-15); } } } Other Commons Math examples (source code examples)Here is a short list of links related to this Commons Math BinaryFunctionTest.java source code file: |
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