edoRepairerRound.h
00001 /*
00002 The Evolving Distribution Objects framework (EDO) is a template-based,
00003 ANSI-C++ evolutionary computation library which helps you to write your
00004 own estimation of distribution algorithms.
00005 
00006 This library is free software; you can redistribute it and/or
00007 modify it under the terms of the GNU Lesser General Public
00008 License as published by the Free Software Foundation; either
00009 version 2.1 of the License, or (at your option) any later version.
00010 
00011 This library is distributed in the hope that it will be useful,
00012 but WITHOUT ANY WARRANTY; without even the implied warranty of
00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014 Lesser General Public License for more details.
00015 
00016 You should have received a copy of the GNU Lesser General Public
00017 License along with this library; if not, write to the Free Software
00018 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
00019 
00020 Copyright (C) 2011 Thales group
00021 */
00022 /*
00023 Authors:
00024     Johann Dréo <johann.dreo@thalesgroup.com>
00025     Pierre Savéant <pierre.saveant@thalesgroup.com>
00026 */
00027 
00028 #ifndef _edoRepairerRound_h
00029 #define _edoRepairerRound_h
00030 
00031 #include <cmath>
00032 
00033 #include "edoRepairerApply.h"
00034 
00035 
00042 template < typename EOT >
00043 class edoRepairerFloor : public edoRepairerApplyUnary<EOT>
00044 {
00045 public:
00046     edoRepairerFloor() : edoRepairerApplyUnary<EOT>( std::floor ) {}
00047 };
00048 
00049 
00056 template < typename EOT >
00057 class edoRepairerCeil : public edoRepairerApplyUnary<EOT>
00058 {
00059 public:
00060     edoRepairerCeil() : edoRepairerApplyUnary<EOT>( std::ceil ) {}
00061 };
00062 
00063 
00064 // FIXME find a way to put this function as a member of edoRepairerRoundDecimals
00065 template< typename ArgType >
00066 ArgType edoRound( ArgType val, ArgType prec = 1.0 )
00067 { 
00068     return (val > 0.0) ? 
00069         floor(val * prec + 0.5) / prec : 
00070          ceil(val * prec - 0.5) / prec ; 
00071 }
00072 
00082 template < typename EOT >
00083 class edoRepairerRoundDecimals : public edoRepairerApplyBinary<EOT>
00084 {
00085 public:
00086     typedef typename EOT::AtomType ArgType;
00087 
00089     edoRepairerRoundDecimals( ArgType decimals ) : edoRepairerApplyBinary<EOT>( edoRound<ArgType>, 1 / decimals ) 
00090     {
00091         assert( decimals <= 1.0 );
00092         assert( 1/decimals >= 1.0 );
00093     }
00094 };
00095 
00096 
00103 template < typename EOT >
00104 class edoRepairerRound : public edoRepairerRoundDecimals<EOT>
00105 {
00106 public:
00107     edoRepairerRound() : edoRepairerRoundDecimals<EOT>( 1.0 ) {}
00108 };
00109 
00110 #endif // !_edoRepairerRound_h
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