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128 lines
3.1 KiB
128 lines
3.1 KiB
//=====================================================
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// File : action_cholesky.hh
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// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
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//=====================================================
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//
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// This program is free software; you can redistribute it and/or
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// modify it under the terms of the GNU General Public License
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// as published by the Free Software Foundation; either version 2
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// of the License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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//
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#ifndef ACTION_CHOLESKY
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#define ACTION_CHOLESKY
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#include "utilities.h"
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#include "STL_interface.hh"
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#include <string>
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#include "init/init_function.hh"
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#include "init/init_vector.hh"
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#include "init/init_matrix.hh"
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using namespace std;
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template<class Interface>
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class Action_cholesky {
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public :
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// Ctor
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Action_cholesky( int size ):_size(size)
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{
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MESSAGE("Action_cholesky Ctor");
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// STL mat/vec initialization
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init_matrix_symm<pseudo_random>(X_stl,_size);
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init_matrix<null_function>(C_stl,_size);
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// make sure X is invertible
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for (int i=0; i<_size; ++i)
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X_stl[i][i] = std::abs(X_stl[i][i]) * 1e2 + 100;
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// generic matrix and vector initialization
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Interface::matrix_from_stl(X_ref,X_stl);
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Interface::matrix_from_stl(X,X_stl);
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Interface::matrix_from_stl(C,C_stl);
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_cost = 0;
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for (int j=0; j<_size; ++j)
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{
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double r = std::max(_size - j -1,0);
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_cost += 2*(r*j+r+j);
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}
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}
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// invalidate copy ctor
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Action_cholesky( const Action_cholesky & )
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{
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INFOS("illegal call to Action_cholesky Copy Ctor");
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exit(1);
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}
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// Dtor
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~Action_cholesky( void ){
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MESSAGE("Action_cholesky Dtor");
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// deallocation
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Interface::free_matrix(X_ref,_size);
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Interface::free_matrix(X,_size);
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Interface::free_matrix(C,_size);
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}
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// action name
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static inline std::string name( void )
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{
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return "cholesky_"+Interface::name();
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}
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double nb_op_base( void ){
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return _cost;
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}
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inline void initialize( void ){
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Interface::copy_matrix(X_ref,X,_size);
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}
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inline void calculate( void ) {
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Interface::cholesky(X,C,_size);
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}
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void check_result( void ){
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// calculation check
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// STL_interface<typename Interface::real_type>::cholesky(X_stl,C_stl,_size);
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//
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// typename Interface::real_type error=
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// STL_interface<typename Interface::real_type>::norm_diff(C_stl,resu_stl);
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//
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// if (error>1.e-6){
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// INFOS("WRONG CALCULATION...residual=" << error);
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// exit(0);
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// }
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}
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private :
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typename Interface::stl_matrix X_stl;
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typename Interface::stl_matrix C_stl;
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typename Interface::gene_matrix X_ref;
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typename Interface::gene_matrix X;
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typename Interface::gene_matrix C;
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int _size;
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double _cost;
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};
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#endif
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