Teuchos - Trilinos Tools Package Version of the Day
Teuchos_MatrixMarket_assignScalar.hpp
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00041 
00042 #ifndef __Teuchos_MatrixMarket_assignScalar_hpp
00043 #define __Teuchos_MatrixMarket_assignScalar_hpp
00044 
00045 #include <Teuchos_as.hpp>
00046 #include <Teuchos_ScalarTraits.hpp>
00047 #include <string>
00048 
00049 
00050 namespace Teuchos {
00051   namespace MatrixMarket {
00052     namespace details {
00053 
00059       template<class Scalar, bool isComplex=Teuchos::ScalarTraits<Scalar>::isComplex>
00060       class ScalarAssigner {
00061       public:
00062         static void
00063         assign (Scalar& val,
00064                 const typename Teuchos::ScalarTraits<Scalar>::magnitudeType& real,
00065                 const typename Teuchos::ScalarTraits<Scalar>::magnitudeType& imag);
00066       };
00067 
00068       // Partial specialization for real Scalar types.
00069       template<class RealType>
00070       class ScalarAssigner<RealType, false> {
00071       public:
00072         static void
00073         assign (RealType& val,
00074                 const typename Teuchos::ScalarTraits<RealType>::magnitudeType& real,
00075                 const typename Teuchos::ScalarTraits<RealType>::magnitudeType& imag)
00076         {
00077           // imag had better be zero.  We're ignoring it regardless.
00078           (void) imag;
00079           val = real;
00080         }
00081       };
00082 
00083 #ifdef HAVE_TEUCHOS_COMPLEX
00084       // Partial specialization for complex Scalar types.
00085       // MagType is the template parameter for std::complex.
00086       template<class MagType>
00087       class ScalarAssigner<std::complex<MagType>, true> {
00088       public:
00089         static void
00090         assign (std::complex<MagType>& val,
00091                 const typename Teuchos::ScalarTraits<std::complex<MagType> >::magnitudeType& real,
00092                 const typename Teuchos::ScalarTraits<std::complex<MagType> >::magnitudeType& imag)
00093         {
00094           val = std::complex<MagType> (real, imag);
00095         }
00096       };
00097 #endif // HAVE_TEUCHOS_COMPLEX
00098 
00105       template<class Scalar>
00106       void
00107       assignScalar (Scalar& val,
00108                     const typename Teuchos::ScalarTraits<Scalar>::magnitudeType& real,
00109                     const typename Teuchos::ScalarTraits<Scalar>::magnitudeType& imag)
00110       {
00111         ScalarAssigner<Scalar>::assign (val, real, imag);
00112       }
00113 
00114     } // namespace details
00115   } // namespace MatrixMarket
00116 } // namespace Teuchos
00117 
00118 #endif // __Teuchos_MatrixMarket_assignScalar_hpp
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