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Commons Math example source code file (NewtonSolver.java)
The Commons Math NewtonSolver.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.solvers;
import org.apache.commons.math.FunctionEvaluationException;
import org.apache.commons.math.MathRuntimeException;
import org.apache.commons.math.MaxIterationsExceededException;
import org.apache.commons.math.analysis.DifferentiableUnivariateRealFunction;
import org.apache.commons.math.analysis.UnivariateRealFunction;
/**
* Implements <a href="http://mathworld.wolfram.com/NewtonsMethod.html">
* Newton's Method</a> for finding zeros of real univariate functions.
* <p>
* The function should be continuous but not necessarily smooth.</p>
*
* @version $Revision: 811685 $ $Date: 2009-09-05 13:36:48 -0400 (Sat, 05 Sep 2009) $
*/
public class NewtonSolver extends UnivariateRealSolverImpl {
/**
* Construct a solver for the given function.
* @param f function to solve.
* @deprecated as of 2.0 the function to solve is passed as an argument
* to the {@link #solve(UnivariateRealFunction, double, double)} or
* {@link UnivariateRealSolverImpl#solve(UnivariateRealFunction, double, double, double)}
* method.
*/
@Deprecated
public NewtonSolver(DifferentiableUnivariateRealFunction f) {
super(f, 100, 1E-6);
}
/**
* Construct a solver.
*/
public NewtonSolver() {
super(100, 1E-6);
}
/** {@inheritDoc} */
@Deprecated
public double solve(final double min, final double max)
throws MaxIterationsExceededException,
FunctionEvaluationException {
return solve(f, min, max);
}
/** {@inheritDoc} */
@Deprecated
public double solve(final double min, final double max, final double startValue)
throws MaxIterationsExceededException, FunctionEvaluationException {
return solve(f, min, max, startValue);
}
/**
* Find a zero near the midpoint of <code>min and
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