data structure for an NFCT (nonequispaced fast cosine transform) plan with double precision
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Public Member Functions |
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| FFTW_MANGLE_DOUBLE (plan) my_fftw_r2r_plan |
| | fftw_plan
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| FFTW_MANGLE_DOUBLE (r2r_kind)*r2r_kind |
| | r2r transform type (DCT-I)
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Data Fields |
| NFFT_INT | N_total |
| | Total number of Fourier coefficients.
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| NFFT_INT | M_total |
| | Total number of samples.
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| double * | f_hat |
| | Fourier coefficients.
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| double * | f |
| | Samples.
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| void(* | mv_trafo )(void *) |
| | Transform.
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| void(* | mv_adjoint )(void *) |
| | Adjoint transform.
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NFFT_INT | d |
| | dimension, rank
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NFFT_INT * | N |
| | cut-off-frequencies (kernel)
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NFFT_INT * | n |
| | length of DCT-I
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| NFFT_INT | n_total |
| | Combined total length of FFTW transforms.
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double * | sigma |
| | oversampling-factor
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NFFT_INT | m |
| | cut-off parameter in time-domain
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double * | b |
| | shape parameters
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| NFFT_INT | K |
| | Number of equispaced samples of window function.
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unsigned | flags |
| | flags for precomputation, malloc
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unsigned | fftw_flags |
| | flags for the fftw
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double * | x |
| | nodes (in time/spatial domain)
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double | MEASURE_TIME_t [3] |
| | measured time for each step
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double ** | c_phi_inv |
| | precomputed data, matrix D
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double * | psi |
| | precomputed data, matrix B
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NFFT_INT | size_psi |
| | only for thin B
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NFFT_INT * | psi_index_g |
| | only for thin B
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NFFT_INT * | psi_index_f |
| | only for thin B
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double * | g |
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double * | g_hat |
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double * | g1 |
| | input of fftw
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double * | g2 |
| | output of fftw
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double * | spline_coeffs |
| | input for de Boor algorithm, if B_SPLINE or SINC_2m is defined
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data structure for an NFCT (nonequispaced fast cosine transform) plan with double precision
Definition at line 269 of file nfft3.h.