1 //===================================================== 2 // File : action_cholesky.hh 3 // Copyright (C) 2008 Gael Guennebaud <gael.guennebaud (at) 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_CHOLESKY 20 #define ACTION_CHOLESKY 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 28 using namespace std; 29 30 template<class Interface> 31 class Action_cholesky { 32 33 public : 34 35 // Ctor 36 37 Action_cholesky( int size ):_size(size) 38 { 39 MESSAGE("Action_cholesky Ctor"); 40 41 // STL mat/vec initialization 42 init_matrix_symm<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] = std::abs(X_stl[i][i]) * 1e2 + 100; 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 = 0; 55 for (int j=0; j<_size; ++j) 56 { 57 double r = std::max(_size - j -1,0); 58 _cost += 2*(r*j+r+j); 59 } 60 } 61 62 // invalidate copy ctor 63 64 Action_cholesky( const Action_cholesky & ) 65 { 66 INFOS("illegal call to Action_cholesky Copy Ctor"); 67 exit(1); 68 } 69 70 // Dtor 71 72 ~Action_cholesky( void ){ 73 74 MESSAGE("Action_cholesky Dtor"); 75 76 // deallocation 77 Interface::free_matrix(X_ref,_size); 78 Interface::free_matrix(X,_size); 79 Interface::free_matrix(C,_size); 80 } 81 82 // action name 83 84 static inline std::string name( void ) 85 { 86 return "cholesky_"+Interface::name(); 87 } 88 89 double nb_op_base( void ){ 90 return _cost; 91 } 92 93 inline void initialize( void ){ 94 Interface::copy_matrix(X_ref,X,_size); 95 } 96 97 inline void calculate( void ) { 98 Interface::cholesky(X,C,_size); 99 } 100 101 void check_result( void ){ 102 // calculation check 103 // STL_interface<typename Interface::real_type>::cholesky(X_stl,C_stl,_size); 104 // 105 // typename Interface::real_type error= 106 // STL_interface<typename Interface::real_type>::norm_diff(C_stl,resu_stl); 107 // 108 // if (error>1.e-6){ 109 // INFOS("WRONG CALCULATION...residual=" << error); 110 // exit(0); 111 // } 112 113 } 114 115 private : 116 117 typename Interface::stl_matrix X_stl; 118 typename Interface::stl_matrix C_stl; 119 120 typename Interface::gene_matrix X_ref; 121 typename Interface::gene_matrix X; 122 typename Interface::gene_matrix C; 123 124 int _size; 125 double _cost; 126 }; 127 128 #endif 129
