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Numeric and Promote Traits of FFTWComplex |

The numeric and promote traits for fftw_complex and FFTWComplex follow the general specifications for Numeric and Promotion Traits and AlgebraicField. They are explicitly specialized for the types involved:

        template<>
        struct NumericTraits<fftw_complex>
        {
            typedef fftw_complex Promote;
            typedef fftw_complex RealPromote;
            typedef fftw_complex ComplexPromote;
            typedef fftw_real    ValueType;

            typedef VigraFalseType isIntegral;
            typedef VigraFalseType isScalar;
            typedef VigraFalseType isOrdered;
            typedef VigraTrueType  isComplex;

            // etc.
        };

        template<class Real>
        struct NumericTraits<FFTWComplex<Real> >
        {
            typedef FFTWComplex<Real> Promote;
            typedef FFTWComplex<Real> RealPromote;
            typedef FFTWComplex<Real> ComplexPromote;
            typedef Real              ValueType;

            typedef VigraFalseType isIntegral;
            typedef VigraFalseType isScalar;
            typedef VigraFalseType isOrdered;
            typedef VigraTrueType  isComplex;

            // etc.
        };

        template<>
        struct NormTraits<fftw_complex>
        {
            typedef fftw_complex Type;
            typedef fftw_real    SquaredNormType;
            typedef fftw_real    NormType;
        };

        template<class Real>
        struct NormTraits<FFTWComplex>
        {
            typedef FFTWComplex Type;
            typedef fftw_real   SquaredNormType;
            typedef fftw_real   NormType;
        };

        template <>
        struct PromoteTraits<fftw_complex, fftw_complex>
        {
            typedef fftw_complex Promote;
        };

        template <>
        struct PromoteTraits<fftw_complex, double>
        {
            typedef fftw_complex Promote;
        };

        template <>
        struct PromoteTraits<double, fftw_complex>
        {
            typedef fftw_complex Promote;
        };

        template <class Real>
        struct PromoteTraits<FFTWComplex<Real>, FFTWComplex<Real> >
        {
            typedef FFTWComplex<Real> Promote;
        };

        template <class Real>
        struct PromoteTraits<FFTWComplex<Real>, double>
        {
            typedef FFTWComplex<Real> Promote;
        };

        template <class Real>
        struct PromoteTraits<double, FFTWComplex<Real> >
        {
            typedef FFTWComplex<Real> Promote;
        };

#include <vigra/fftw3.hxx> (for FFTW 3) or
#include <vigra/fftw.hxx> (for deprecated FFTW 2)
Namespace: vigra

© Ullrich Köthe (ullrich.koethe@iwr.uni-heidelberg.de) Heidelberg Collaboratory for Image Processing, University of Heidelberg, Germany | html generated using doxygen and Python vigra 1.9.0 (Tue Nov 6 2012)