Main Page | Modules | Data Structures | Directories | File List | Data Fields | Globals | Related Pages

nnfft_plan Struct Reference
[NNFFT]

Structure for a transform plan. More...

#include <nfft3.h>


Data Fields

int N_total
 api total number of Fourier coeffs.
int M_total
 total number of samples
complex * f_hat
 Fourier coefficients.
complex * f
 samples
int d
 dimension, rank
double * sigma
 oversampling-factor
double * a
 1 + 2*m/N1
int * N
 cut-off-frequencies
int * N1
 sigma*N
int * aN1
 sigma*a*N
int m
 cut-off parameter in time-domain
double * b
 shape parameters
int K
 number of precomp.
int aN1_total
 aN1_total=aN1[0]* .
nfft_plan * direct_plan
 plan for the nfft
unsigned nnfft_flags
 flags for precomputation, malloc
int * n
 n=N1, just for the window function
double * x
 nodes (in time/spatial domain)
double * v
 nodes (in fourier domain)
double * c_phi_inv
 precomputed data, matrix D
double * psi
 precomputed data, matrix B
int size_psi
 only for thin B
int * psi_index_g
 only for thin B
int * psi_index_f
 only for thin B
complex * F
double * spline_coeffs
 input for de Boor algorithm, if B_SPLINE or SINC_2m is defined


Detailed Description

Structure for a transform plan.


Field Documentation

int nnfft_plan::aN1_total
 

aN1_total=aN1[0]* .

.. *aN1[d-1]

int nnfft_plan::K
 

number of precomp.

uniform psi


The documentation for this struct was generated from the following file:
Generated on Wed May 10 20:39:39 2006 for NFFT by  doxygen 1.4.4