Sacado_mpl_type_wrap.hpp

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00001 // $Id$ 
00002 // $Source$ 
00003 // @HEADER
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00005 // 
00006 //                           Sacado Package
00007 //                 Copyright (2006) Sandia Corporation
00008 // 
00009 // Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
00010 // the U.S. Government retains certain rights in this software.
00011 // 
00012 // This library is free software; you can redistribute it and/or modify
00013 // it under the terms of the GNU Lesser General Public License as
00014 // published by the Free Software Foundation; either version 2.1 of the
00015 // License, or (at your option) any later version.
00016 //  
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00018 // WITHOUT ANY WARRANTY; without even the implied warranty of
00019 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00020 // Lesser General Public License for more details.
00021 //  
00022 // You should have received a copy of the GNU Lesser General Public
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00024 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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00031 
00032 #ifndef SACADO_MPL_TYPE_WRAP_HPP
00033 #define SACADO_MPL_TYPE_WRAP_HPP
00034 
00035 #include "Sacado_mpl_has_type.hpp"
00036 #include "Sacado_mpl_if.hpp"
00037 
00038 namespace Sacado {
00039 
00040   namespace mpl {
00041 
00042     // Wrap a type T so that it becomes a metafunction if it isn't already
00043     template <class T> struct add_type { typedef T type; };
00044     template <class T> struct type_wrap : 
00045       mpl::mpl_if< mpl::has_type<T>, T, add_type<T> > {};
00046 
00047   } // namespace mpl
00048 
00049 } // namespace Sacado
00050 
00051 #endif // SACADO_MPL_TYPE_WRAP_HPP
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