NFFT  3.3.2
Public Member Functions | Data Fields
nfctl_plan Struct Reference

data structure for an NFCT (nonequispaced fast cosine transform) plan with long double precision More...

#include <nfft3.h>

Public Member Functions

 FFTW_MANGLE_LONG_DOUBLE (plan) my_fftw_r2r_plan
 fftw_plan
 FFTW_MANGLE_LONG_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.
long double * f_hat
 Fourier coefficients.
long double * 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.
long double * sigma
 oversampling-factor
NFFT_INT m
 cut-off parameter in time-domain
long double * b
 shape parameters
NFFT_INT K
 Number of equispaced samples of window function.
unsigned flags
 flags for precomputation, malloc
unsigned fftw_flags
 flags for the fftw
long double * x
 nodes (in time/spatial domain)
double MEASURE_TIME_t [3]
 measured time for each step
long double ** c_phi_inv
 precomputed data, matrix D
long 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
long double * g
long double * g_hat
long double * g1
 input of fftw
long double * g2
 output of fftw
long double * spline_coeffs
 input for de Boor algorithm, if B_SPLINE or SINC_2m is defined

Detailed Description

data structure for an NFCT (nonequispaced fast cosine transform) plan with long double precision

Definition at line 269 of file nfft3.h.


Field Documentation

Total number of Fourier coefficients.

Definition at line 269 of file nfft3.h.

Total number of samples.

Definition at line 269 of file nfft3.h.

long double* nfctl_plan::f_hat

Fourier coefficients.

Definition at line 269 of file nfft3.h.

long double* nfctl_plan::f

Samples.

Definition at line 269 of file nfft3.h.

void(* nfctl_plan::mv_trafo)(void *)

Transform.

Definition at line 269 of file nfft3.h.

void(* nfctl_plan::mv_adjoint)(void *)

Adjoint transform.

Definition at line 269 of file nfft3.h.

Combined total length of FFTW transforms.

Definition at line 269 of file nfft3.h.

NFFT_INT nfctl_plan::K

Number of equispaced samples of window function.

Used for flag PRE_LIN_PSI.

Definition at line 269 of file nfft3.h.


The documentation for this struct was generated from the following file: