Evocosm - A C++ Framework for Evolutionary Computing

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Created by Scott Robert Ladd at Coyote Gulch Productions.


roulette.h
00001 /*
00002     Evocosm is a C++ framework for implementing evolutionary algorithms.
00003 
00004     Copyright 2011 Scott Robert Ladd. All rights reserved.
00005 
00006     Evocosm is user-supported open source software. Its continued development is dependent
00007     on financial support from the community. You can provide funding by visiting the Evocosm
00008     website at:
00009 
00010         http://www.coyotegulch.com
00011 
00012     You may license Evocosm in one of two fashions:
00013 
00014     1) Simplified BSD License (FreeBSD License)
00015 
00016     Redistribution and use in source and binary forms, with or without modification, are
00017     permitted provided that the following conditions are met:
00018 
00019     1.  Redistributions of source code must retain the above copyright notice, this list of
00020         conditions and the following disclaimer.
00021 
00022     2.  Redistributions in binary form must reproduce the above copyright notice, this list
00023         of conditions and the following disclaimer in the documentation and/or other materials
00024         provided with the distribution.
00025 
00026     THIS SOFTWARE IS PROVIDED BY SCOTT ROBERT LADD ``AS IS'' AND ANY EXPRESS OR IMPLIED
00027     WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
00028     FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL SCOTT ROBERT LADD OR
00029     CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
00030     CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
00031     SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
00032     ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
00033     NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
00034     ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00035 
00036     The views and conclusions contained in the software and documentation are those of the
00037     authors and should not be interpreted as representing official policies, either expressed
00038     or implied, of Scott Robert Ladd.
00039 
00040     2) Closed-Source Proprietary License
00041 
00042     If your project is a closed-source or proprietary project, the Simplified BSD License may
00043     not be appropriate or desirable. In such cases, contact the Evocosm copyright holder to
00044     arrange your purchase of an appropriate license.
00045 
00046     The author can be contacted at:
00047 
00048           scott.ladd@coyotegulch.com
00049           scott.ladd@gmail.com
00050           http:www.coyotegulch.com
00051 */
00052 
00053 #if !defined(LIBEVOCOSM_ROULETTE_H)
00054 #define LIBEVOCOSM_ROULETTE_H
00055 
00056 // standard C++ Library
00057 #include <cmath>
00058 #include <vector>
00059 #include <limits>
00060 
00061 // libevocosm
00062 #include "evocommon.h"
00063 
00064 namespace libevocosm
00065 {
00066     using std::vector;
00067 
00069 
00089     class roulette_wheel : protected globals
00090     {
00091     public:
00093 
00099         roulette_wheel(const vector<double> & a_weights,
00100                        double a_min_weight = std::numeric_limits<double>::epsilon(),
00101                        double a_max_weight = std::numeric_limits<double>::max());
00102 
00104 
00111         roulette_wheel(const double * a_weights,
00112                        size_t a_length,
00113                        double a_min_weight = std::numeric_limits<double>::epsilon(),
00114                        double a_max_weight = std::numeric_limits<double>::max());
00115 
00117 
00121         roulette_wheel(const roulette_wheel & a_source);
00122 
00124 
00128         roulette_wheel & operator = (const roulette_wheel & a_source);
00129 
00131 
00134         ~roulette_wheel();
00135 
00137 
00141         size_t get_size() const
00142         {
00143             return m_size;
00144         }
00145 
00147 
00153         double set_weight(size_t a_index, double a_weight);
00154 
00156 
00161         double get_weight(size_t a_index) const;
00162 
00164 
00170         size_t get_index() const;
00171 
00172     protected:
00174         size_t m_size;
00175 
00177         double * m_weights;
00178 
00180         double m_total_weight;
00181 
00183         double m_min_weight;
00184 
00186         double m_max_weight;
00187 
00188     private:
00189         // internal copy function
00190         void copy(const roulette_wheel & a_source);
00191     };
00192 };
00193 
00194 #endif

© 1996-2005 Scott Robert Ladd. All rights reserved.
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