createplanr2c()

void fourier::fft::DRFFTWAFFArrayEngine::createplanr2c ( )

private

Definition at line 153 of file fftwaffar.cc.

References FOURIER_assert, Mplanr2c, Mseriesarray, and Mspectrumarray.

Referenced by r2c().

    {
      if (Mplanr2c==0)
      {
        // overall parameters
        // ------------------
        // tranformation only along one dimension
        const int rank=1;
        // size of each series
        int n=Mseriesarray.size(0);
        // number of signals to be transformed
        const int howmany=Mseriesarray.size(1);
        // quick design
        const unsigned flags=FFTW_ESTIMATE;

        // input array
        // -----------
        aff::CArray<TAseries::Tvalue> Cseriesarray(Mseriesarray);
        // one-dimensional transform: use default
        int* inembed=0;
        // distance to next sample
        const int istride=Cseriesarray.stride(0);
        // distance to next signal
        const int idist=Cseriesarray.stride(1);
        // casted pointer
        double* in=Cseriesarray.castedpointer<double>();

        // output array
        // ------------
        aff::CArray<TAspectrum::Tvalue> Cspectrumarray(Mspectrumarray);
        // one-dimensional transform: use default
        int* onembed=0;
        // distance to next sample
        const int ostride=Cspectrumarray.stride(0);
        // distance to next signal
        const int odist=Cspectrumarray.stride(1);
        // casted pointer
        fftw_complex* out=Cspectrumarray.castedpointer<fftw_complex>();

        // create plan
        Mplanr2c=fftw_plan_many_dft_r2c(rank, &n, howmany,
                                        in, inembed, istride, idist,
                                        out, onembed, ostride, odist,
                                        flags);
        FOURIER_assert(Mplanr2c!=0, "ERROR: creating r2c plan");
      }
    } // void DRFFTWAFFArrayEngine::createplanr2c()

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