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