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diff --git a/bench/btl/actions/action_axpy.hh b/bench/btl/actions/action_axpy.hh
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+++ b/bench/btl/actions/action_axpy.hh
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+//=====================================================
+// File   :  action_axpy.hh
+// Author :  L. Plagne <laurent.plagne@edf.fr)>
+// Copyright (C) EDF R&D,  lun sep 30 14:23:19 CEST 2002
+//=====================================================
+//
+// 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_AXPY
+#define ACTION_AXPY
+#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_axpy {
+
+public :
+
+  // Ctor
+
+  Action_axpy( int size ):_size(size),_coef(1.0)
+  {
+    MESSAGE("Action_axpy Ctor");
+
+    // STL vector initialization
+
+    init_vector<pseudo_random>(X_stl,_size);
+    init_vector<pseudo_random>(Y_stl,_size);
+    init_vector<null_function>(resu_stl,_size);
+
+    // generic matrix and vector initialization
+
+    Interface::vector_from_stl(X_ref,X_stl);
+    Interface::vector_from_stl(Y_ref,Y_stl);
+
+    Interface::vector_from_stl(X,X_stl);
+    Interface::vector_from_stl(Y,Y_stl);
+
+
+  }
+
+  // invalidate copy ctor
+
+  Action_axpy( const  Action_axpy & )
+  {
+    INFOS("illegal call to Action_axpy Copy Ctor");
+    exit(1);
+  }
+
+  // Dtor
+
+  ~Action_axpy( void ){
+
+    MESSAGE("Action_axpy Dtor");
+
+    // deallocation
+
+    Interface::free_vector(X_ref);
+    Interface::free_vector(Y_ref);
+
+    Interface::free_vector(X);
+    Interface::free_vector(Y);
+  }
+
+  // action name
+
+  static inline std::string name( void )
+  {
+    return "axpy_"+Interface::name();
+  }
+
+  double nb_op_base( void ){
+    return 2.0*_size;
+  }
+
+  inline void initialize( void ){
+    Interface::copy_vector(X_ref,X,_size);
+    Interface::copy_vector(Y_ref,Y,_size);
+  }
+
+  inline void calculate( void ) {
+    BTL_ASM_COMMENT("mybegin axpy");
+    Interface::axpy(_coef,X,Y,_size);
+    BTL_ASM_COMMENT("myend axpy");
+  }
+
+  void check_result( void ){
+    if (_size>128) return;
+    // calculation check
+
+    Interface::vector_to_stl(Y,resu_stl);
+
+    STL_interface<typename Interface::real_type>::axpy(_coef,X_stl,Y_stl,_size);
+
+    typename Interface::real_type error=
+      STL_interface<typename Interface::real_type>::norm_diff(Y_stl,resu_stl);
+
+    if (error>1.e-6){
+      INFOS("WRONG CALCULATION...residual=" << error);
+      exit(0);
+    }
+
+  }
+
+private :
+
+  typename Interface::stl_vector X_stl;
+  typename Interface::stl_vector Y_stl;
+  typename Interface::stl_vector resu_stl;
+
+  typename Interface::gene_vector X_ref;
+  typename Interface::gene_vector Y_ref;
+
+  typename Interface::gene_vector X;
+  typename Interface::gene_vector Y;
+
+  typename Interface::real_type _coef;
+
+  int _size;
+};
+
+#endif