00001 /* 00002 * Copyright (c) 2005, DoodleProject 00003 * All rights reserved. 00004 * 00005 * Redistribution and use in source and binary forms, with or without 00006 * modification, are permitted provided that the following conditions 00007 * are met: 00008 * 00009 * Redistributions of source code must retain the above copyright 00010 * notice, this list of conditions and the following disclaimer. 00011 * 00012 * Redistributions in binary form must reproduce the above copyright 00013 * notice, this list of conditions and the following disclaimer in 00014 * the documentation and/or other materials provided with the 00015 * distribution. 00016 * 00017 * Neither the name of DoodleProject nor the names of its contributors 00018 * may be used to endorse or promote products derived from this 00019 * software without specific prior written permission. 00020 * 00021 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 00022 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, 00023 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 00024 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00025 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 00026 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 00027 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00028 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 00029 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 00030 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 00031 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 00032 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 00033 * SUCH DAMAGE. 00034 */ 00035 00036 #ifndef _NUMERICS4CPP_ITERATIVEMETHOD_H_ 00037 #define _NUMERICS4CPP_ITERATIVEMETHOD_H_ 00038 00039 #include "math.h" 00040 #include "exception/exception.h" 00041 00042 NUM_NAMESPACE_BEGIN 00043 00048 class iterative_method { 00049 00050 public: 00057 iterative_method(unsigned int iterations = 100, double relative_error = 1.0e-10) { 00058 maximum_iterations(iterations); 00059 maximum_relative_error(relative_error); 00060 } 00061 00066 unsigned int maximum_iterations() const { 00067 return _maximum_iterations; 00068 } 00069 00074 void maximum_iterations(unsigned int iterations) { 00075 if (iterations == 0) { 00076 throw invalid_argument_exception("Maximum iterations must be positive."); 00077 } 00078 _maximum_iterations = iterations; 00079 } 00080 00085 double maximum_relative_error() const { 00086 return _maximum_relative_error; 00087 } 00088 00093 void maximum_relative_error(double relative_error) { 00094 if (relative_error <= 0.0 || is_nan(relative_error)) { 00095 throw invalid_argument_exception("Maximum relative error must be positive."); 00096 } 00097 _maximum_relative_error = relative_error; 00098 } 00099 00100 private: 00102 unsigned int _maximum_iterations; 00103 00105 double _maximum_relative_error; 00106 }; 00107 00108 NUM_NAMESPACE_END 00109 00110 #endif