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NFFT
3.5.3
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data structure for an NFCT (nonequispaced fast cosine transform) plan with float precision More...
#include <nfft3.h>
Public Member Functions | |
FFTW_MANGLE_FLOAT (plan) my_fftw_r2r_plan | |
fftw_plan | |
FFTW_MANGLE_FLOAT (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. | |
float * | f_hat |
Fourier coefficients. | |
float * | f |
Samples. | |
void(* | mv_trafo )(void *) |
Transform. | |
void(* | mv_adjoint )(void *) |
Adjoint transform. | |
NFFT_INT | d |
dimension, rank | |
NFFT_INT * | N |
cut-off-frequencies (kernel) | |
NFFT_INT * | n |
length of DCT-I | |
NFFT_INT | n_total |
Combined total length of FFTW transforms. | |
float * | sigma |
oversampling-factor | |
NFFT_INT | m |
cut-off parameter in time-domain | |
float * | b |
shape parameters | |
NFFT_INT | K |
Number of equispaced samples of window function. More... | |
unsigned | flags |
flags for precomputation, malloc | |
unsigned | fftw_flags |
flags for the fftw | |
float * | x |
nodes (in time/spatial domain) | |
double | MEASURE_TIME_t [3] |
measured time for each step | |
float ** | c_phi_inv |
precomputed data, matrix D | |
float * | 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 | |
float * | g |
float * | g_hat |
float * | g1 |
input of fftw | |
float * | g2 |
output of fftw | |
float * | spline_coeffs |
input for de Boor algorithm, if B_SPLINE or SINC_2m is defined | |
data structure for an NFCT (nonequispaced fast cosine transform) plan with float precision
NFFT_INT nfctf_plan::K |