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action_trisolve.hh
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Sat, Feb 22, 18:45

action_trisolve.hh
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//=====================================================
// File : action_trisolve.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_TRISOLVE
#define ACTION_TRISOLVE
#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_trisolve {
public :
// Ctor
Action_trisolve( int size ):_size(size)
{
MESSAGE("Action_trisolve Ctor");
// STL vector initialization
init_matrix<pseudo_random>(L_stl,_size);
init_vector<pseudo_random>(B_stl,_size);
init_vector<null_function>(X_stl,_size);
for (int j=0; j<_size; ++j)
{
for (int i=0; i<j; ++i)
L_stl[j][i] = 0;
L_stl[j][j] += 3;
}
init_vector<null_function>(resu_stl,_size);
// generic matrix and vector initialization
Interface::matrix_from_stl(L,L_stl);
Interface::vector_from_stl(X,X_stl);
Interface::vector_from_stl(B,B_stl);
_cost = 0;
for (int j=0; j<_size; ++j)
{
_cost += 2*j + 1;
}
}
// invalidate copy ctor
Action_trisolve( const Action_trisolve & )
{
INFOS("illegal call to Action_trisolve Copy Ctor");
exit(1);
}
// Dtor
~Action_trisolve( void ){
MESSAGE("Action_trisolve Dtor");
// deallocation
Interface::free_matrix(L,_size);
Interface::free_vector(B);
Interface::free_vector(X);
}
// action name
static inline std::string name( void )
{
return "trisolve_vector_"+Interface::name();
}
double nb_op_base( void ){
return _cost;
}
inline void initialize( void ){
//Interface::copy_vector(X_ref,X,_size);
}
inline void calculate( void ) {
Interface::trisolve_lower(L,B,X,_size);
}
void check_result(){
if (_size>128) return;
// calculation check
Interface::vector_to_stl(X,resu_stl);
STL_interface<typename Interface::real_type>::trisolve_lower(L_stl,B_stl,X_stl,_size);
typename Interface::real_type error=
STL_interface<typename Interface::real_type>::norm_diff(X_stl,resu_stl);
if (error>1.e-4){
INFOS("WRONG CALCULATION...residual=" << error);
exit(2);
} //else INFOS("CALCULATION OK...residual=" << error);
}
private :
typename Interface::stl_matrix L_stl;
typename Interface::stl_vector X_stl;
typename Interface::stl_vector B_stl;
typename Interface::stl_vector resu_stl;
typename Interface::gene_matrix L;
typename Interface::gene_vector X;
typename Interface::gene_vector B;
int _size;
double _cost;
};
#endif

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