NFFT 3.5.3alpha
Public Member Functions | Data Fields
nsfftf_plan Struct Reference

data structure for an NSFFT (nonequispaced sparse fast Fourier transform) plan with float precision More...

#include <nfft3.h>

Public Member Functions

 FFTW_MANGLE_FLOAT (plan) *set_fftw_plan1
 fftw plan for the nfft blocks
 
 FFTW_MANGLE_FLOAT (plan) *set_fftw_plan2
 fftw plan for the nfft blocks
 

Data Fields

NFFT_INT N_total
 Total number of Fourier coefficients.
 
NFFT_INT M_total
 Total number of samples.
 
fftwf_complex * f_hat
 Fourier coefficients.
 
fftwf_complex * f
 Samples.
 
void(* mv_trafo )(void *)
 Transform.
 
void(* mv_adjoint )(void *)
 Adjoint transform.
 
int d
 dimension, rank; d = 2, 3
 
int J
 problem size, i.e., d=2: N_total=(J+4) 2^(J+1) d=3: N_total=2^J 6(2^((J+1)/2+1)-1)+2^(3(J/2+1))
 
int sigma
 oversampling-factor
 
unsigned flags
 flags for precomputation, malloc
 
int * index_sparse_to_full
 index conversation, overflow for d=3, J=9!
 
int r_act_nfft_plan
 index of current nfft block
 
nfftf_plan * act_nfft_plan
 current nfft block
 
nfftf_plan * center_nfft_plan
 central nfft block
 
nfftf_plan * set_nfft_plan_1d
 nfft plans for short nffts
 
nfftf_plan * set_nfft_plan_2d
 nfft plans for short nffts
 
float * x_transposed
 coordinate exchanged nodes, d = 2
 
float * x_102
 
float * x_201
 
float * x_120
 
float * x_021
 coordinate exchanged nodes, d=3
 

Detailed Description

data structure for an NSFFT (nonequispaced sparse fast Fourier transform) plan with float precision

Definition at line 477 of file nfft3.h.

Field Documentation

◆ N_total

NFFT_INT nsfftf_plan::N_total

Total number of Fourier coefficients.

Definition at line 477 of file nfft3.h.

◆ M_total

NFFT_INT nsfftf_plan::M_total

Total number of samples.

Definition at line 477 of file nfft3.h.

◆ f_hat

fftwf_complex* nsfftf_plan::f_hat

Fourier coefficients.

Definition at line 477 of file nfft3.h.

◆ f

fftwf_complex* nsfftf_plan::f

Samples.

Definition at line 477 of file nfft3.h.

◆ mv_trafo

void(* nsfftf_plan::mv_trafo) (void *)

Transform.

Definition at line 477 of file nfft3.h.

◆ mv_adjoint

void(* nsfftf_plan::mv_adjoint) (void *)

Adjoint transform.

Definition at line 477 of file nfft3.h.

◆ d

int nsfftf_plan::d

dimension, rank; d = 2, 3

Definition at line 477 of file nfft3.h.

◆ J

int nsfftf_plan::J

problem size, i.e., d=2: N_total=(J+4) 2^(J+1) d=3: N_total=2^J 6(2^((J+1)/2+1)-1)+2^(3(J/2+1))

Definition at line 477 of file nfft3.h.

◆ sigma

int nsfftf_plan::sigma

oversampling-factor

Definition at line 477 of file nfft3.h.

◆ flags

unsigned nsfftf_plan::flags

flags for precomputation, malloc

Definition at line 477 of file nfft3.h.

◆ index_sparse_to_full

int* nsfftf_plan::index_sparse_to_full

index conversation, overflow for d=3, J=9!

Definition at line 477 of file nfft3.h.

◆ r_act_nfft_plan

int nsfftf_plan::r_act_nfft_plan

index of current nfft block

Definition at line 477 of file nfft3.h.

◆ act_nfft_plan

nfftf_plan* nsfftf_plan::act_nfft_plan

current nfft block

Definition at line 477 of file nfft3.h.

◆ center_nfft_plan

nfftf_plan* nsfftf_plan::center_nfft_plan

central nfft block

Definition at line 477 of file nfft3.h.

◆ set_nfft_plan_1d

nfftf_plan* nsfftf_plan::set_nfft_plan_1d

nfft plans for short nffts

Definition at line 477 of file nfft3.h.

◆ set_nfft_plan_2d

nfftf_plan* nsfftf_plan::set_nfft_plan_2d

nfft plans for short nffts

Definition at line 477 of file nfft3.h.

◆ x_transposed

float* nsfftf_plan::x_transposed

coordinate exchanged nodes, d = 2

Definition at line 477 of file nfft3.h.

◆ x_102

float* nsfftf_plan::x_102

Definition at line 477 of file nfft3.h.

◆ x_201

float * nsfftf_plan::x_201

Definition at line 477 of file nfft3.h.

◆ x_120

float * nsfftf_plan::x_120

Definition at line 477 of file nfft3.h.

◆ x_021

float * nsfftf_plan::x_021

coordinate exchanged nodes, d=3

Definition at line 477 of file nfft3.h.


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