internal/planar_complex.hh

namespace TooN{
    namespace Internal{
        
        ///@internal
        ///@brief A simple smart pointer type representing planar complex data.
        ///Not resizable. Also, only the minimum number of smart pointer
        ///functionality has been implemented to make Vector work. The class returns
        ///reference types, so it can represent mutable data.
        ///@ingroup gInternal
        template<class Precision> struct PointerToPlanarComplex;
        template<class Precision> struct PointerToPlanarComplex<std::complex<Precision> >
        {
            const Precision* const re;
            const Precision* const im;
        
            PointerToPlanarComplex(std::pair<Precision*, Precision*> d)
            :re(d.first),im(d.second)
            {}

            PointerToPlanarComplex(std::pair<const Precision*, const Precision*> d)
            :re(d.first),im(d.second)
            {}

            PointerToPlanarComplex<std::complex<Precision> > operator+(int i) const
            {
                return PointerToPlanarComplex<std::complex<Precision> >(std::make_pair(re+i, im+i));
            }

            const std::complex<Precision> operator[](int i) const
            {
                return std::complex<Precision>(re[i], im[i]);
            }

        };
    }

    
    struct ReferencePlanarComplex
    {
        template<int Size, typename Precision>
        struct VLayout;

        template<int Size, typename Precision>
        struct VLayout<Size, std::complex<Precision> >: 
          public Internal::GenericVBase<Size, std::complex<Precision>, 1, Internal::VectorSlice<Size, std::complex<Precision>, Internal::PointerToPlanarComplex<std::complex<double> >,
                                                        Internal::PointerToPlanarComplex<std::complex<double> >,
                                                        const std::complex<double>,
                                                        const std::complex<double> > >
        {
            VLayout(Internal::PointerToPlanarComplex<std::complex<Precision> > p, int sz=0)
            :Internal::GenericVBase<Size, std::complex<Precision>, 1, Internal::VectorSlice<Size, std::complex<Precision>, Internal::PointerToPlanarComplex<std::complex<double> >,
                                                        Internal::PointerToPlanarComplex<std::complex<double> >,
                                                        const std::complex<double>,
                                                        const std::complex<double> > >(p, sz, 1)
            {}

            
        };

    };
}