CLAM-Development  1.4.0
CommonOps.hxx
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1 /*
2  * Copyright (c) 2004 MUSIC TECHNOLOGY GROUP (MTG)
3  * UNIVERSITAT POMPEU FABRA
4  *
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 2 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program; if not, write to the Free Software
18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19  *
20  */
21 
22 #ifndef __COMMONOPS__
23 #define __COMMONOPS__
24 
25 namespace CLAM
26 {
27 
28  template < typename DataType >
29  class Multiply
30  {
31  public:
32 
33  static const DataType IdentityElement;
34 
35  template <typename DataType2>
36  DataType operator()( DataType op1, DataType2 op2 )
37  {
38  return op1 * op2;
39  }
40  };
41 
42  template <typename DataType>
43  const DataType Multiply<DataType>::IdentityElement = 1;
44 
45  template< typename DataType >
46  class Add
47  {
48  public:
49 
50  static const DataType IdentityElement;
51 
52  template <typename DataType2>
53  DataType operator() ( DataType op1, DataType2 op2 )
54  {
55  return op1 + op2;
56  }
57  };
58 
59  template< typename DataType >
60  const DataType Add<DataType>::IdentityElement = 0;
61 
62 
63 }
64 
65 #endif // CommonOps.hxx
66