77 lines
2.3 KiB
C++
77 lines
2.3 KiB
C++
// @HEADER
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// ***********************************************************************
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//
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// Teuchos: Common Tools Package
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// Copyright (2004) Sandia Corporation
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//
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// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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// license for use of this work by or on behalf of the U.S. Government.
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA
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// Questions? Contact Michael A. Heroux (maherou@sandia.gov)
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//
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// ***********************************************************************
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// @HEADER
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#ifndef _TEUCHOS_PROMOTION_TRAITS_HPP_
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#define _TEUCHOS_PROMOTION_TRAITS_HPP_
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#include "Teuchos_ConfigDefs.hpp"
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namespace Teuchos {
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template <class A, class B>
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class PromotionTraits
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{
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public:
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};
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//Specialization
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template <class T> class PromotionTraits<T,T> {
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public:
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typedef T promote;
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};
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#define PT_SPEC(type1,type2,type3) \
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template <> class PromotionTraits< type1 , type2 > { \
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public: \
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typedef type3 promote; \
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}; \
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template <> class PromotionTraits< type2 , type1 > { \
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public: \
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typedef type3 promote; \
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};
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#if defined(HAVE_COMPLEX) && defined(HAVE_TEUCHOS_COMPLEX)
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PT_SPEC(double,std::complex<float>,std::complex<double>)
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PT_SPEC(float,std::complex<double>,std::complex<double>)
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PT_SPEC(float,std::complex<float>,std::complex<float>)
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PT_SPEC(double,std::complex<double>,std::complex<double>)
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#endif
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PT_SPEC(double,float,double)
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PT_SPEC(double,long,double)
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PT_SPEC(double,int,double)
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PT_SPEC(float,long,float)
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PT_SPEC(float,int,float)
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// ToDo: Add specializations for extended precision types!
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#undef PT_SPEC
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} // Teuchos namespace
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#endif // _TEUCHOS_PROMOTION_TRAITS_HPP_
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