Data Fields |
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int | N_total |
| | Total number of Fourier coefficients.
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int | M_total |
| | Total number of samples.
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fftwf_complex * | f_hat |
| | Vector of Fourier coefficients, size is N_total * sizeof( fftwf_complex )
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fftwf_complex * | f |
| | Vector of samples, size is M_total * sizeof( fftwf_complex )
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void(* | mv_trafo )(void *) |
| | Pointer to the own transform.
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void(* | mv_adjoint )(void *) |
| | Pointer to the own adjoint.
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int | d |
| | dimension aka rank
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int * | N |
| | multi-bandwidth
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float * | sigma |
| | oversampling-factor
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int * | n |
| | FFTW length, equal to sigma*N, default is the power of 2 such that  .
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int | n_total |
| | Total size of FFTW.
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int | m |
| | Cut-off parameter of the window function, default value is 6 (KAISER_BESSEL), 9 (SINC_POWER), 11 (B_SPLINE), 12 (GAUSSIAN)
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float * | b |
| | Shape parameter of the window function.
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int | K |
| | Number of equispaced samples of the window function for PRE_LIN_PSI.
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unsigned | nfft_flags |
| | Flags for precomputation, (de)allocation, and FFTW usage, default setting is PRE_PHI_HUT | PRE_PSI | MALLOC_X | MALLOC_F_HAT | MALLOC_F | FFTW_INIT | FFT_OUT_OF_PLACE.
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unsigned | fftw_flags |
| | Flags for the FFTW, default is FFTW_ESTIMATE | FFTW_DESTROY_INPUT.
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float * | x |
| | Nodes in time/spatial domain, size is  doubles.
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double | MEASURE_TIME_t [3] |
| | Measured time for each step if MEASURE_TIME is set.
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float ** | c_phi_inv |
| | Precomputed data for the diagonal matrix  , size \ is  doubles.
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float * | psi |
| | Precomputed data for the sparse matrix  , size depends on precomputation scheme.
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int * | psi_index_g |
| | Indices in source/target vector for PRE_FULL_PSI.
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int * | psi_index_f |
| | Indices in source/target vector for PRE_FULL_PSI.
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fftwf_complex * | g |
| | Oversampled vector of samples, size is n_total double complex.
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fftwf_complex * | g_hat |
| | Zero-padded vector of Fourier coefficients, size is n_total fftw_complex.
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fftwf_complex * | g1 |
| | Input of fftw.
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fftwf_complex * | g2 |
| | Output of fftw.
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float * | spline_coeffs |
| | Input for de Boor algorithm if B_SPLINE or SINC_POWER is defined.
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int * | index_x |
| | Index array for nodes x used when flag NFFT_SORT_NODES is set.
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Definition at line 173 of file nfft3.h.
