NFFT Logo 3.2.2
Data Fields
fastsum_plan_ Struct Reference

plan for fast summation algorithm More...

#include <fastsum.h>

Data Fields

int d
 api
int N_total
 number of source knots
int M_total
 number of target knots
double _Complex * alpha
 source coefficients
double _Complex * f
 target evaluations
double * x
 source knots in d-ball with radius 1/4-eps_b/2
double * y
 target knots in d-ball with radius 1/4-eps_b/2
kernel k
 kernel function
double * kernel_param
 parameters for kernel function
unsigned flags
 flags precomp.
double _Complex * pre_K
 internal
int n
 FS__ - fast summation.
fftw_complex * b
 expansion coefficients
int p
 degree of smoothness of regularization
double eps_I
 inner boundary
double eps_B
 outer boundary
nfft_plan mv1
 source nfft plan
nfft_plan mv2
 target nfft plan
int Ad
 near field
double _Complex * Add
 spline values
fftw_plan fft_plan
int box_count
int box_count_per_dim
int * box_offset
double * box_x
double _Complex * box_alpha
double MEASURE_TIME_t [8]
 Measured time for each step if MEASURE_TIME is set.

Detailed Description

plan for fast summation algorithm

Definition at line 71 of file fastsum.h.


Field Documentation

api

number of dimensions

Definition at line 75 of file fastsum.h.

Referenced by BuildBox(), fastsum_exact(), fastsum_init_guru(), fastsum_precompute(), fastsum_trafo(), and SearchBox().

flags precomp.

and approx.type

Definition at line 89 of file fastsum.h.

Referenced by fastsum_finalize(), fastsum_init_guru(), fastsum_precompute(), fastsum_trafo(), and SearchBox().

double _Complex* fastsum_plan_::pre_K

internal

DS_PRE - direct summation precomputed K(x_j-y_l)

Definition at line 94 of file fastsum.h.

FS__ - fast summation.

expansion degree

Definition at line 97 of file fastsum.h.

Referenced by fastsum_init_guru(), and fastsum_precompute().

near field

number of spline knots for nearfield computation of regularized kernel

Definition at line 108 of file fastsum.h.

Referenced by fastsum_init_guru(), fastsum_precompute(), fastsum_trafo(), and SearchBox().


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

Generated on Fri Oct 12 2012 by Doxygen 1.8.0-20120409