/usr/include/trilinos/Teuchos_PromotionTraits.hpp is in libtrilinos-teuchos-dev 12.10.1-3.
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// ***********************************************************************
//
// Teuchos: Common Tools Package
// Copyright (2004) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
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// met:
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// 1. Redistributions of source code must retain the above copyright
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// 2. Redistributions in binary form must reproduce the above copyright
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// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
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// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
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// @HEADER
#ifndef _TEUCHOS_PROMOTION_TRAITS_HPP_
#define _TEUCHOS_PROMOTION_TRAITS_HPP_
#include "Teuchos_ConfigDefs.hpp"
namespace Teuchos {
template <class A, class B>
class PromotionTraits
{
public:
};
//Specialization
template <class T> class PromotionTraits<T,T> {
public:
typedef T promote;
};
#define PT_SPEC(type1,type2,type3) \
template <> class PromotionTraits< type1 , type2 > { \
public: \
typedef type3 promote; \
}; \
template <> class PromotionTraits< type2 , type1 > { \
public: \
typedef type3 promote; \
};
#ifdef HAVE_TEUCHOS_COMPLEX
PT_SPEC(double,std::complex<float>,std::complex<double>)
PT_SPEC(float,std::complex<double>,std::complex<double>)
PT_SPEC(float,std::complex<float>,std::complex<float>)
PT_SPEC(double,std::complex<double>,std::complex<double>)
#endif // HAVE_TEUCHOS_COMPLEX
PT_SPEC(double,float,double)
PT_SPEC(double,long,double)
PT_SPEC(double,int,double)
PT_SPEC(float,long,float)
PT_SPEC(float,int,float)
// ToDo: Add specializations for extended precision types!
#undef PT_SPEC
} // Teuchos namespace
#endif // _TEUCHOS_PROMOTION_TRAITS_HPP_
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