00001 // -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*- 00002 00003 //----------------------------------------------------------------------------- 00004 // eoRandomRealWeightUp.h 00005 // (c) OPAC 2007 00006 /* 00007 This library is free software; you can redistribute it and/or 00008 modify it under the terms of the GNU Lesser General Public 00009 License as published by the Free Software Foundation; either 00010 version 2 of the License, or (at your option) any later version. 00011 00012 This library is distributed in the hope that it will be useful, 00013 but WITHOUT ANY WARRANTY; without even the implied warranty of 00014 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 00015 Lesser General Public License for more details. 00016 00017 You should have received a copy of the GNU Lesser General Public 00018 License along with this library; if not, write to the Free Software 00019 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 00020 00021 Contact: thomas.legrand@lifl.fr 00022 */ 00023 //----------------------------------------------------------------------------- 00024 00025 #ifndef EORANDOMREALWEIGHTUP_H 00026 #define EORANDOMREALWEIGHTUP_H 00027 00028 //----------------------------------------------------------------------------- 00029 #include <eoWeightUpdater.h> 00030 #include <utils/eoRNG.h> 00031 //----------------------------------------------------------------------------- 00032 00038 class eoRandomRealWeightUp:public eoWeightUpdater<double> 00039 { 00040 public: 00041 00047 eoRandomRealWeightUp( 00048 double _min, 00049 double _max 00050 ):min(_min),max(_max) 00051 { 00052 // consistency check 00053 if (min > max) 00054 { 00055 std::string s; 00056 s.append (" min > max in eoRandomRealWeightUp"); 00057 throw std::runtime_error (s); 00058 } 00059 } 00060 00065 void operator() (double & _weight) 00066 { 00067 _weight=rng.uniform(max-min)+min; 00068 } 00069 00070 00071 protected: 00072 double min,max; 00073 00074 }; 00075 00076 00077 00078 #endif/*EORANDOMREALWEIGHTUP_H*/