CommonOps.hxx

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00001 /*
00002  * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
00003  *                         UNIVERSITAT POMPEU FABRA
00004  *
00005  *
00006  * This program is free software; you can redistribute it and/or modify
00007  * it under the terms of the GNU General Public License as published by
00008  * the Free Software Foundation; either version 2 of the License, or
00009  * (at your option) any later version.
00010  *
00011  * This program 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
00014  * GNU General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU General Public License
00017  * along with this program; if not, write to the Free Software
00018  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
00019  *
00020  */
00021 
00022 #ifndef __COMMONOPS__
00023 #define __COMMONOPS__
00024 
00025 namespace CLAM
00026 {
00027 
00028         template < typename DataType >
00029         class Multiply
00030         {
00031         public:
00032         
00033                 static const DataType IdentityElement;
00034                 
00035                 template <typename DataType2>
00036                 DataType operator()( DataType op1, DataType2 op2 )
00037                 {
00038                         return op1 * op2;
00039                 }
00040         };
00041 
00042         template <typename DataType>
00043                 const DataType Multiply<DataType>::IdentityElement = 1;
00044         
00045         template< typename DataType >
00046         class Add
00047         {
00048         public:
00049 
00050                 static const DataType IdentityElement;
00051 
00052                 template <typename DataType2>
00053                 DataType operator() ( DataType op1, DataType2 op2 )
00054                 {
00055                         return op1 + op2;
00056                 }
00057         };
00058 
00059         template< typename DataType >
00060                 const DataType Add<DataType>::IdentityElement = 0;
00061 
00062 
00063 }
00064 
00065 #endif // CommonOps.hxx
00066