data structure for an NFST (nonequispaced fast sine transform) plan with double precision
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Public Member Functions |
| FFTW_MANGLE_DOUBLE (plan) my_fftw_r2r_plan |
| fftw_plan forward
|
| FFTW_MANGLE_DOUBLE (r2r_kind)*r2r_kind |
| r2r transform type (dct-i)
|
Data Fields |
NFFT_INT | N_total |
| Total number of Fourier coefficients.
|
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
|
NFFT_INT * | N |
| bandwidth
|
NFFT_INT * | n |
| length of DST-I
|
NFFT_INT | n_total |
| Combined total length of FFTW transforms.
|
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.
|
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)
|
double | MEASURE_TIME_t [3] |
| measured time for each step
|
double ** | c_phi_inv |
| precomputed data, matrix D
|
double * | psi |
| precomputed data, matrix B
|
NFFT_INT | size_psi |
| only for thin B
|
NFFT_INT * | psi_index_g |
| only for thin B
|
NFFT_INT * | psi_index_f |
| only for thin B
|
double * | g |
double * | g_hat |
double * | g1 |
| input of fftw
|
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
|
double | nfst_full_psi_eps |
data structure for an NFST (nonequispaced fast sine transform) plan with double precision
Definition at line 346 of file nfft3.h.