action_axpby.hh revision c981c48f5bc9aefeffc0bcb0cc3934c2fae179dd 
1//=====================================================
2// File   :  action_axpby.hh
3// Copyright (C) 2008 Gael Guennebaud <gael.guennebaud@inria.fr>
4//=====================================================
5//
6// This program is free software; you can redistribute it and/or
7// modify it under the terms of the GNU General Public License
8// as published by the Free Software Foundation; either version 2
9// of the License, or (at your option) any later version.
10//
11// This program is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14// GNU General Public License for more details.
15// You should have received a copy of the GNU General Public License
16// along with this program; if not, write to the Free Software
17// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
18//
19#ifndef ACTION_AXPBY
20#define ACTION_AXPBY
21#include "utilities.h"
22#include "STL_interface.hh"
23#include <string>
24#include "init/init_function.hh"
25#include "init/init_vector.hh"
26#include "init/init_matrix.hh"
27
28using namespace std;
29
30template<class Interface>
31class Action_axpby {
32
33public :
34
35  // Ctor
36  Action_axpby( int size ):_size(size),_alpha(0.5),_beta(0.95)
37  {
38    MESSAGE("Action_axpby Ctor");
39
40    // STL vector initialization
41    init_vector<pseudo_random>(X_stl,_size);
42    init_vector<pseudo_random>(Y_stl,_size);
43    init_vector<null_function>(resu_stl,_size);
44
45    // generic matrix and vector initialization
46    Interface::vector_from_stl(X_ref,X_stl);
47    Interface::vector_from_stl(Y_ref,Y_stl);
48
49    Interface::vector_from_stl(X,X_stl);
50    Interface::vector_from_stl(Y,Y_stl);
51  }
52
53  // invalidate copy ctor
54  Action_axpby( const  Action_axpby & )
55  {
56    INFOS("illegal call to Action_axpby Copy Ctor");
57    exit(1);
58  }
59
60  // Dtor
61  ~Action_axpby( void ){
62    MESSAGE("Action_axpby Dtor");
63
64    // deallocation
65    Interface::free_vector(X_ref);
66    Interface::free_vector(Y_ref);
67
68    Interface::free_vector(X);
69    Interface::free_vector(Y);
70  }
71
72  // action name
73  static inline std::string name( void )
74  {
75    return "axpby_"+Interface::name();
76  }
77
78  double nb_op_base( void ){
79    return 3.0*_size;
80  }
81
82  inline void initialize( void ){
83    Interface::copy_vector(X_ref,X,_size);
84    Interface::copy_vector(Y_ref,Y,_size);
85  }
86
87  inline void calculate( void ) {
88    BTL_ASM_COMMENT("mybegin axpby");
89    Interface::axpby(_alpha,X,_beta,Y,_size);
90    BTL_ASM_COMMENT("myend axpby");
91  }
92
93  void check_result( void ){
94    if (_size>128) return;
95    // calculation check
96    Interface::vector_to_stl(Y,resu_stl);
97
98    STL_interface<typename Interface::real_type>::axpby(_alpha,X_stl,_beta,Y_stl,_size);
99
100    typename Interface::real_type error=
101      STL_interface<typename Interface::real_type>::norm_diff(Y_stl,resu_stl);
102
103    if (error>1.e-6){
104      INFOS("WRONG CALCULATION...residual=" << error);
105      exit(2);
106    }
107  }
108
109private :
110
111  typename Interface::stl_vector X_stl;
112  typename Interface::stl_vector Y_stl;
113  typename Interface::stl_vector resu_stl;
114
115  typename Interface::gene_vector X_ref;
116  typename Interface::gene_vector Y_ref;
117
118  typename Interface::gene_vector X;
119  typename Interface::gene_vector Y;
120
121  typename Interface::real_type _alpha;
122  typename Interface::real_type _beta;
123
124  int _size;
125};
126
127#endif
128