1 | //=====================================================
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2 | // File : action_cholesky.hh
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3 | // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
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4 | //=====================================================
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5 | //
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6 | // This program is free software; you can redistribute it and/or
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7 | // modify it under the terms of the GNU General Public License
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8 | // as published by the Free Software Foundation; either version 2
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9 | // of the License, or (at your option) any later version.
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10 | //
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11 | // This program is distributed in the hope that it will be useful,
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12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 | // GNU General Public License for more details.
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15 | // You should have received a copy of the GNU General Public License
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16 | // along with this program; if not, write to the Free Software
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17 | // Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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18 | //
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19 | #ifndef ACTION_CHOLESKY
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20 | #define ACTION_CHOLESKY
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21 | #include "utilities.h"
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22 | #include "STL_interface.hh"
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23 | #include <string>
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24 | #include "init/init_function.hh"
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25 | #include "init/init_vector.hh"
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26 | #include "init/init_matrix.hh"
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27 |
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28 | using namespace std;
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29 |
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30 | template<class Interface>
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31 | class Action_cholesky {
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32 |
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33 | public :
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34 |
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35 | // Ctor
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36 |
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37 | Action_cholesky( int size ):_size(size)
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38 | {
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39 | MESSAGE("Action_cholesky Ctor");
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40 |
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41 | // STL mat/vec initialization
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42 | init_matrix_symm<pseudo_random>(X_stl,_size);
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43 | init_matrix<null_function>(C_stl,_size);
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44 |
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45 | // make sure X is invertible
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46 | for (int i=0; i<_size; ++i)
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47 | X_stl[i][i] = std::abs(X_stl[i][i]) * 1e2 + 100;
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48 |
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49 | // generic matrix and vector initialization
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50 | Interface::matrix_from_stl(X_ref,X_stl);
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51 | Interface::matrix_from_stl(X,X_stl);
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52 | Interface::matrix_from_stl(C,C_stl);
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53 |
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54 | _cost = 0;
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55 | for (int j=0; j<_size; ++j)
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56 | {
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57 | double r = std::max(_size - j -1,0);
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58 | _cost += 2*(r*j+r+j);
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59 | }
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60 | }
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61 |
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62 | // invalidate copy ctor
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63 |
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64 | Action_cholesky( const Action_cholesky & )
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65 | {
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66 | INFOS("illegal call to Action_cholesky Copy Ctor");
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67 | exit(1);
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68 | }
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69 |
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70 | // Dtor
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71 |
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72 | ~Action_cholesky( void ){
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73 |
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74 | MESSAGE("Action_cholesky Dtor");
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75 |
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76 | // deallocation
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77 | Interface::free_matrix(X_ref,_size);
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78 | Interface::free_matrix(X,_size);
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79 | Interface::free_matrix(C,_size);
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80 | }
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81 |
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82 | // action name
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83 |
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84 | static inline std::string name( void )
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85 | {
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86 | return "cholesky_"+Interface::name();
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87 | }
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88 |
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89 | double nb_op_base( void ){
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90 | return _cost;
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91 | }
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92 |
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93 | inline void initialize( void ){
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94 | Interface::copy_matrix(X_ref,X,_size);
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95 | }
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96 |
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97 | inline void calculate( void ) {
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98 | Interface::cholesky(X,C,_size);
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99 | }
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100 |
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101 | void check_result( void ){
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102 | // calculation check
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103 | // STL_interface<typename Interface::real_type>::cholesky(X_stl,C_stl,_size);
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104 | //
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105 | // typename Interface::real_type error=
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106 | // STL_interface<typename Interface::real_type>::norm_diff(C_stl,resu_stl);
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107 | //
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108 | // if (error>1.e-6){
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109 | // INFOS("WRONG CALCULATION...residual=" << error);
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110 | // exit(0);
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111 | // }
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112 |
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113 | }
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114 |
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115 | private :
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116 |
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117 | typename Interface::stl_matrix X_stl;
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118 | typename Interface::stl_matrix C_stl;
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119 |
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120 | typename Interface::gene_matrix X_ref;
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121 | typename Interface::gene_matrix X;
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122 | typename Interface::gene_matrix C;
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123 |
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124 | int _size;
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125 | double _cost;
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126 | };
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127 |
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128 | #endif
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