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