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Sacado_dummy_arg.hpp
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00001 // ***********************************************************************
00002 // 
00003 //                           Sacado Package
00004 //                 Copyright (2006) Sandia Corporation
00005 // 
00006 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
00007 // the U.S. Government retains certain rights in this software.
00008 // 
00009 // This library is free software; you can redistribute it and/or modify
00010 // it under the terms of the GNU Lesser General Public License as
00011 // published by the Free Software Foundation; either version 2.1 of the
00012 // License, or (at your option) any later version.
00013 //  
00014 // This library is distributed in the hope that it will be useful, but
00015 // WITHOUT ANY WARRANTY; without even the implied warranty of
00016 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00017 // Lesser General Public License for more details.
00018 //  
00019 // You should have received a copy of the GNU Lesser General Public
00020 // License along with this library; if not, write to the Free Software
00021 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
00022 // USA
00023 // Questions? Contact David M. Gay (dmgay@sandia.gov) or Eric T. Phipps
00024 // (etphipp@sandia.gov).
00025 // 
00026 // ***********************************************************************
00027 // @HEADER
00028 
00029 #ifndef SACADO_DUMMY_ARG_HPP
00030 #define SACADO_DUMMY_ARG_HPP
00031 
00032 namespace Sacado {
00033 
00035   template <class T> struct dummy_arg { 
00036     operator T() const { return T(0.0); } 
00037   };
00038 
00040   template <class T, class U> struct dummy { 
00041     typedef U type; 
00042   };
00043 
00045   template <class T> struct dummy<T,T> { 
00046     typedef dummy_arg<T> type; 
00047   };
00048 
00049 } // namespace Sacado
00050 
00051 #endif // SACADO_DUMMY_ARG_HPP
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