Extremum.h

00001 /*
00002  * Tiny Vector Matrix Library
00003  * Dense Vector Matrix Libary of Tiny size using Expression Templates
00004  *
00005  * Copyright (C) 2001 - 2007 Olaf Petzold <opetzold@users.sourceforge.net>
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 2.1 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  * $Id: Extremum.h,v 1.10 2007-06-23 15:58:58 opetzold Exp $
00022  */
00023 
00024 #ifndef TVMET_EXTREMUM_H
00025 #define TVMET_EXTREMUM_H
00026 
00027 namespace tvmet {
00028 
00029 
00030 /**
00031  * \class matrix_tag Extremum.h "tvmet/Extremum.h"
00032  * \brief For use with Extremum to simplify max handling.
00033  * This allows the min/max functions to return an Extremum object.
00034  */
00035 struct matrix_tag { };
00036 
00037 
00038 /**
00039  * \class vector_tag Extremum.h "tvmet/Extremum.h"
00040  * \brief For use with Extremum to simplify max handling.
00041  * This allows the min/max functions to return an Extremum object.
00042  */
00043 struct vector_tag { };
00044 
00045 
00046 /**
00047  * \class Extremum Extremum.h "tvmet/Extremum.h"
00048  * \brief Generell class for storing extremums determined by min/max.
00049  */
00050 template<class T1, class T2, class Tag>
00051 class Extremum { };
00052 
00053 
00054 /**
00055  * \class Extremum<T1, T2, vector_tag> Extremum.h "tvmet/Extremum.h"
00056  * \brief Partial specialzed for vectors to store extremums by value and index.
00057  */
00058 template<class T1, class T2>
00059 class Extremum<T1, T2, vector_tag>
00060 {
00061 public:
00062   typedef T1                    value_type;
00063   typedef T2                    index_type;
00064 
00065 public:
00066   Extremum(value_type value, index_type index)
00067     : m_value(value), m_index(index) { }
00068   value_type value() const { return m_value; }
00069   index_type index() const { return m_index; }
00070 
00071 private:
00072   value_type                     m_value;
00073   index_type                     m_index;
00074 };
00075 
00076 
00077 /**
00078  * \class Extremum<T1, T2, matrix_tag> Extremum.h "tvmet/Extremum.h"
00079  * \brief Partial specialzed for matrix to store extremums by value, row and column.
00080  */
00081 template<class T1, class T2>
00082 class Extremum<T1, T2, matrix_tag>
00083 {
00084 public:
00085   typedef T1                    value_type;
00086   typedef T2                    index_type;
00087 
00088 public:
00089   Extremum(value_type value, index_type row, index_type col)
00090     : m_value(value), m_row(row), m_col(col) { }
00091   value_type value() const { return m_value; }
00092   index_type row() const { return m_row; }
00093   index_type col() const { return m_col; }
00094 
00095 private:
00096   value_type                     m_value;
00097   index_type                     m_row, m_col;
00098 };
00099 
00100 
00101 } // namespace tvmet
00102 
00103 #endif // TVMET_EXTREMUM_H
00104 
00105 // Local Variables:
00106 // mode:C++
00107 // tab-width:8
00108 // End: