1//=====================================================
2// File   :  action_lu_decomp.hh
3// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
4//=====================================================
5//
6// This program is free software; you can redistribute it and/or
7// modify it under the terms of the GNU General Public License
8// as published by the Free Software Foundation; either version 2
9// of the License, or (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// You should have received a copy of the GNU General Public License
16// along with this program; if not, write to the Free Software
17// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18//
19#ifndef ACTION_PARTIAL_LU
20#define ACTION_PARTIAL_LU
21#include "utilities.h"
22#include "STL_interface.hh"
23#include <string>
24#include "init/init_function.hh"
25#include "init/init_vector.hh"
26#include "init/init_matrix.hh"
27
28using namespace std;
29
30template<class Interface>
31class Action_partial_lu {
32
33public :
34
35  // Ctor
36
37  Action_partial_lu( int size ):_size(size)
38  {
39    MESSAGE("Action_partial_lu Ctor");
40
41    // STL vector initialization
42    init_matrix<pseudo_random>(X_stl,_size);
43    init_matrix<null_function>(C_stl,_size);
44
45    // make sure X is invertible
46    for (int i=0; i<_size; ++i)
47      X_stl[i][i] = X_stl[i][i] * 1e2 + 1;
48
49    // generic matrix and vector initialization
50    Interface::matrix_from_stl(X_ref,X_stl);
51    Interface::matrix_from_stl(X,X_stl);
52    Interface::matrix_from_stl(C,C_stl);
53
54    _cost = 2.0*size*size*size/3.0 + size*size;
55  }
56
57  // invalidate copy ctor
58
59  Action_partial_lu( const  Action_partial_lu & )
60  {
61    INFOS("illegal call to Action_partial_lu Copy Ctor");
62    exit(1);
63  }
64
65  // Dtor
66
67  ~Action_partial_lu( void ){
68
69    MESSAGE("Action_partial_lu Dtor");
70
71    // deallocation
72    Interface::free_matrix(X_ref,_size);
73    Interface::free_matrix(X,_size);
74    Interface::free_matrix(C,_size);
75  }
76
77  // action name
78
79  static inline std::string name( void )
80  {
81    return "partial_lu_decomp_"+Interface::name();
82  }
83
84  double nb_op_base( void ){
85    return _cost;
86  }
87
88  inline void initialize( void ){
89    Interface::copy_matrix(X_ref,X,_size);
90  }
91
92  inline void calculate( void ) {
93      Interface::partial_lu_decomp(X,C,_size);
94  }
95
96  void check_result( void ){
97    // calculation check
98//     Interface::matrix_to_stl(C,resu_stl);
99
100//     STL_interface<typename Interface::real_type>::lu_decomp(X_stl,C_stl,_size);
101//
102//     typename Interface::real_type error=
103//       STL_interface<typename Interface::real_type>::norm_diff(C_stl,resu_stl);
104//
105//     if (error>1.e-6){
106//       INFOS("WRONG CALCULATION...residual=" << error);
107//       exit(0);
108//     }
109
110  }
111
112private :
113
114  typename Interface::stl_matrix X_stl;
115  typename Interface::stl_matrix C_stl;
116
117  typename Interface::gene_matrix X_ref;
118  typename Interface::gene_matrix X;
119  typename Interface::gene_matrix C;
120
121  int _size;
122  double _cost;
123};
124
125#endif
126