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authorJim Guggemos <jimg@google.com>2012-12-04 16:46:41 -0700
committerJim Guggemos <jimg@google.com>2012-12-04 17:08:38 -0700
commitb015e75e8c7ba1ab4ddb91e9372a57e76f3fd159 (patch)
tree54d1c7d66098154c1d7c5bd414394ef4cf255810 /bench/btl/actions/action_trisolve.hh
parent63f67d748682b46d58be31235a0a2d64d81b998c (diff)
parentc981c48f5bc9aefeffc0bcb0cc3934c2fae179dd (diff)
downloadeigen-b015e75e8c7ba1ab4ddb91e9372a57e76f3fd159.tar.gz
Change-Id: Ic9004531328145ea36ba513bb96a23595427f6a4
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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