Teuchos_PrimitiveTypeTraits.hpp

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// 
//                    Teuchos: Common Tools Package
//                 Copyright (2004) Sandia Corporation
// 
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
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// ////////////////////////////////////////////////////////////////////////
// Teuchos_PrimitiveTypeTraits.hpp

#ifndef TEUCHOS_PRIMITIVE_TYPE_TRAITS_H
#define TEUCHOS_PRIMITIVE_TYPE_TRAITS_H

#include "Teuchos_TestForException.hpp"

namespace Teuchos {


template <class T> class PrimitiveTypeTraits {
public:
  typedef T  primitiveType;
  static int numPrimitiveObjs() { return 1; }
  static void extractPrimitiveObjs(
    const T                &obj
    ,const int             numPrimitiveObjs
    ,primitiveType         primitiveObjs[]
    )
    {
#ifdef _DEBUG
      TEST_FOR_EXCEPTION( numPrimitiveObjs!=1 || primitiveObjs==NULL, std::invalid_argument, "Error!" );
#endif
      primitiveObjs[0] = obj;
    }
  static void loadPrimitiveObjs(
    const int              numPrimitiveObjs
    ,const primitiveType   primitiveObjs[]
    ,T                     *obj
    )
    {
#ifdef _DEBUG
      TEST_FOR_EXCEPTION( numPrimitiveObjs!=1 || primitiveObjs==NULL, std::invalid_argument, "Error!" );
#endif
      *obj = primitiveObjs[0];
    }
};

#ifdef HAVE_COMPLEX


template <class T> class PrimitiveTypeTraits< std::complex<T> > {
public:
  typedef T  primitiveType;
  static int numPrimitiveObjs() { return 2; }
  static void extractPrimitiveObjs(
    const std::complex<T>  &obj
    ,const int             numPrimitiveObjs
    ,primitiveType         primitiveObjs[]
    )
    {
#ifdef _DEBUG
      TEST_FOR_EXCEPTION( numPrimitiveObjs!=2 || primitiveObjs==NULL, std::invalid_argument, "Error!" );
#endif
      primitiveObjs[0] = obj.real();
      primitiveObjs[1] = obj.imag();
    }
  static void loadPrimitiveObjs(
    const int              numPrimitiveObjs
    ,const primitiveType   primitiveObjs[]
    ,std::complex<T>       *obj
    )
    {
#ifdef _DEBUG
      TEST_FOR_EXCEPTION( numPrimitiveObjs!=2 || primitiveObjs==NULL, std::invalid_argument, "Error!" );
#endif
      *obj = std::complex<T>( primitiveObjs[0], primitiveObjs[1] );
    }
};

#endif // HAVE_COMPLEX

} // namespace Teuchos

#endif // TEUCHOS_PRIMITIVE_TYPE_TRAITS_H

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