nsfftl_plan Struct Reference

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

#include <nfft3.h>

Public Member Functions
	FFTW_MANGLE_LONG_DOUBLE (plan) *set_fftw_plan1
	fftw plan for the nfft blocks
	FFTW_MANGLE_LONG_DOUBLE (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.
fftwl_complex *	f_hat
	Fourier coefficients.
fftwl_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
nfftl_plan *	act_nfft_plan
	current nfft block
nfftl_plan *	center_nfft_plan
	central nfft block
nfftl_plan *	set_nfft_plan_1d
	nfft plans for short nffts
nfftl_plan *	set_nfft_plan_2d
	nfft plans for short nffts
long double *	x_transposed
	coordinate exchanged nodes, d = 2
long double *	x_102
long double *	x_201
long double *	x_120
long double *	x_021
	coordinate exchanged nodes, d=3

Detailed Description

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

Definition at line 479 of file nfft3.h.

Field Documentation

N_total

NFFT_INT nsfftl_plan::N_total

Total number of Fourier coefficients.

Definition at line 479 of file nfft3.h.

M_total

NFFT_INT nsfftl_plan::M_total

Total number of samples.

Definition at line 479 of file nfft3.h.

f_hat

fftwl_complex* nsfftl_plan::f_hat

Fourier coefficients.

Definition at line 479 of file nfft3.h.

f

fftwl_complex* nsfftl_plan::f

Samples.

Definition at line 479 of file nfft3.h.

mv_trafo

void(* nsfftl_plan::mv_trafo) (void *)

Transform.

Definition at line 479 of file nfft3.h.

mv_adjoint

void(* nsfftl_plan::mv_adjoint) (void *)

Adjoint transform.

Definition at line 479 of file nfft3.h.

d

int nsfftl_plan::d

dimension, rank; d = 2, 3

Definition at line 479 of file nfft3.h.

J

int nsfftl_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 479 of file nfft3.h.

sigma

int nsfftl_plan::sigma

oversampling-factor

Definition at line 479 of file nfft3.h.

flags

unsigned nsfftl_plan::flags

flags for precomputation, malloc

Definition at line 479 of file nfft3.h.

index_sparse_to_full

int* nsfftl_plan::index_sparse_to_full

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

Definition at line 479 of file nfft3.h.

r_act_nfft_plan

int nsfftl_plan::r_act_nfft_plan

index of current nfft block

Definition at line 479 of file nfft3.h.

act_nfft_plan

nfftl_plan* nsfftl_plan::act_nfft_plan

current nfft block

Definition at line 479 of file nfft3.h.

center_nfft_plan

nfftl_plan* nsfftl_plan::center_nfft_plan

central nfft block

Definition at line 479 of file nfft3.h.

set_nfft_plan_1d

nfftl_plan* nsfftl_plan::set_nfft_plan_1d

nfft plans for short nffts

Definition at line 479 of file nfft3.h.

set_nfft_plan_2d

nfftl_plan* nsfftl_plan::set_nfft_plan_2d

nfft plans for short nffts

Definition at line 479 of file nfft3.h.

x_transposed

long double* nsfftl_plan::x_transposed

coordinate exchanged nodes, d = 2

Definition at line 479 of file nfft3.h.

x_102

long double* nsfftl_plan::x_102

Definition at line 479 of file nfft3.h.

x_201

long double * nsfftl_plan::x_201

Definition at line 479 of file nfft3.h.

x_120

long double * nsfftl_plan::x_120

Definition at line 479 of file nfft3.h.

x_021

long double * nsfftl_plan::x_021

coordinate exchanged nodes, d=3

Definition at line 479 of file nfft3.h.

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

• nfft3.h