1 /* 2 * Copyright 2003-2004 The Apache Software Foundation. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package org.apache.commons.math.analysis; 17 18 /** 19 * A concrete {@link UnivariateRealSolverFactory}. This is the default solver factory 20 * used by commons-math. 21 * <p> 22 * The default solver returned by this factory is a {@link BrentSolver}. 23 * 24 * @version $Revision: 155427 $ $Date: 2005-02-26 06:11:52 -0700 (Sat, 26 Feb 2005) $ 25 */ 26 public class UnivariateRealSolverFactoryImpl extends UnivariateRealSolverFactory { 27 28 /** 29 * Default constructor. 30 */ 31 public UnivariateRealSolverFactoryImpl() { 32 } 33 34 /** 35 * Create a new {@link UnivariateRealSolver} for the given function. The 36 * actual solver returned is determined by the underlying factory. 37 * 38 * This factory returns a {@link BrentSolver} instance. 39 * 40 * @param f the function. 41 * @return the new solver. 42 */ 43 public UnivariateRealSolver newDefaultSolver(UnivariateRealFunction f) { 44 return newBrentSolver(f); 45 } 46 47 /** 48 * Create a new {@link UnivariateRealSolver} for the given function. The 49 * solver is an implementation of the bisection method. 50 * @param f the function. 51 * @return the new solver. 52 */ 53 public UnivariateRealSolver newBisectionSolver(UnivariateRealFunction f) { 54 return new BisectionSolver(f); 55 } 56 57 /** 58 * Create a new {@link UnivariateRealSolver} for the given function. The 59 * solver is an implementation of the Brent method. 60 * @param f the function. 61 * @return the new solver. 62 */ 63 public UnivariateRealSolver newBrentSolver(UnivariateRealFunction f) { 64 return new BrentSolver(f); 65 } 66 67 /** 68 * Create a new {@link UnivariateRealSolver} for the given function. The 69 * solver is an implementation of Newton's Method. 70 * @param f the function. 71 * @return the new solver. 72 */ 73 public UnivariateRealSolver newNewtonSolver( 74 DifferentiableUnivariateRealFunction f) { 75 76 return new NewtonSolver(f); 77 } 78 79 /** 80 * Create a new {@link UnivariateRealSolver} for the given function. The 81 * solver is an implementation of the secant method. 82 * @param f the function. 83 * @return the new solver. 84 */ 85 public UnivariateRealSolver newSecantSolver(UnivariateRealFunction f) { 86 return new SecantSolver(f); 87 } 88 }