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# moFirstImprSelect.h

    00001 /*
    00002 * <moFirstImprSelect.h>
    00003 * Copyright (C) DOLPHIN Project-Team, INRIA Futurs, 2006-2007
    00004 * (C) OPAC Team, LIFL, 2002-2007
    00005 *
    00006 * Sébastien Cahon, Jean-Charles Boisson (Jean-Charles.Boisson@lifl.fr)
    00007 *
    00008 * This software is governed by the CeCILL license under French law and
    00009 * abiding by the rules of distribution of free software.  You can  use,
    00010 * modify and/ or redistribute the software under the terms of the CeCILL
    00011 * license as circulated by CEA, CNRS and INRIA at the following URL
    00012 * "http://www.cecill.info".
    00013 *
    00014 * As a counterpart to the access to the source code and  rights to copy,
    00015 * modify and redistribute granted by the license, users are provided only
    00016 * with a limited warranty  and the software's author,  the holder of the
    00017 * economic rights,  and the successive licensors  have only  limited liability.
    00018 *
    00019 * In this respect, the user's attention is drawn to the risks associated
    00020 * with loading,  using,  modifying and/or developing or reproducing the
    00021 * software by the user in light of its specific status of free software,
    00022 * that may mean  that it is complicated to manipulate,  and  that  also
    00023 * therefore means  that it is reserved for developers  and  experienced
    00024 * professionals having in-depth computer knowledge. Users are therefore
    00025 * encouraged to load and test the software's suitability as regards their
    00026 * requirements in conditions enabling the security of their systems and/or
    00027 * data to be ensured and,  more generally, to use and operate it in the
    00028 * same conditions as regards security.
    00029 * The fact that you are presently reading this means that you have had
    00030 * knowledge of the CeCILL license and that you accept its terms.
    00031 *
    00032 * ParadisEO WebSite : http://paradiseo.gforge.inria.fr
    00033 * Contact: paradiseo-help@lists.gforge.inria.fr
    00034 *
    00035 */
    00036
    00037 #ifndef __moFirstImprSelect_h
    00038 #define __moFirstImprSelect_h
    00039
    00040 #include "moMoveSelect.h"
    00041
    00043
    00048 template < class M > class moFirstImprSelect:public moMoveSelect < M >
    00049 {
    00050
    00051 public:
    00052
    00054   typedef typename M::EOType::Fitness Fitness;
    00055
    00057
    00060   virtual void init (const Fitness & __fit)
    00061   {
    00062
    00063     valid = false;
    00064     init_fit = __fit;
    00065   }
    00066
    00067
    00069
    00077   bool update (const M & __move, const typename M::EOType::Fitness & __fit)
    00078   {
    00079
    00080     if (__fit > init_fit)
    00081       {
    00082
    00083         best_fit = __fit;
    00084         best_move = __move;
    00085         valid = true;
    00086
    00087         return false;
    00088       }
    00089     else
    00090       {
    00091         return true;
    00092       }
    00093   }
    00094
    00096
    00101   void operator   () (M & __move, Fitness & __fit) throw (EmptySelection)
    00102   {
    00103
    00104     if (valid)
    00105       {
    00106         __move = best_move;
    00107         __fit = best_fit;
    00108       }
    00109     else
    00110       throw EmptySelection ();
    00111   }
    00112
    00113 private:
    00114
    00116   bool valid;
    00117
    00119   M best_move;
    00120
    00122   Fitness init_fit;
    00123
    00125   Fitness best_fit;
    00126
    00127 };
    00128
    00129 #endif