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NFFT
3.4.1
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NFFT
3.4.1
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plan for fast summation algorithm More...
#include <fastsum.h>
Public Member Functions | |
| NFFT (plan) mv1 | |
| source nfft plan | |
| NFFT (plan) mv2 | |
| target nfft plan | |
| FFTW (plan) fft_plan | |
Data Fields | |
| int | d |
| api More... | |
| int | N_total |
| number of source knots | |
| int | M_total |
| number of target knots | |
| C * | alpha |
| source coefficients | |
| C * | f |
| target evaluations | |
| R * | x |
| source knots in d-ball with radius 1/4-eps_b/2 | |
| R * | y |
| target knots in d-ball with radius 1/4-eps_b/2 | |
| kernel | k |
| kernel function | |
| R * | kernel_param |
| parameters for kernel function | |
| unsigned | flags |
| flags precomp. More... | |
| C * | pre_K |
| internal More... | |
| int | n |
| FS__ - fast summation. More... | |
| C * | b |
| expansion coefficients | |
| C * | f_hat |
| Fourier coefficients of nfft plans. | |
| int | p |
| degree of smoothness of regularization | |
| R | eps_I |
| inner boundary | |
| R | eps_B |
| outer boundary | |
| int | Ad |
| near field More... | |
| C * | Add |
| spline values | |
| int | box_count |
| int | box_count_per_dim |
| int * | box_offset |
| R * | box_x |
| C * | box_alpha |
| int * | permutation_x_alpha |
| permutation vector of source nodes if STORE_PERMUTATION_X_ALPHA is set | |
| R | MEASURE_TIME_t [8] |
| Measured time for each step if MEASURE_TIME is set. | |
| int fastsum_plan_::d |
api
number of dimensions
Definition at line 84 of file fastsum.h.
Referenced by BuildBox(), fastsum_exact(), fastsum_init_guru_kernel(), fastsum_init_guru_source_nodes(), fastsum_init_guru_target_nodes(), fastsum_precompute_source_nodes(), fastsum_trafo(), and SearchBox().
| unsigned fastsum_plan_::flags |
flags precomp.
and approx.type
Definition at line 98 of file fastsum.h.
Referenced by fastsum_finalize_kernel(), fastsum_finalize_source_nodes(), fastsum_init_guru_kernel(), fastsum_init_guru_source_nodes(), fastsum_precompute_source_nodes(), fastsum_precompute_target_nodes(), fastsum_trafo(), and SearchBox().
| C* fastsum_plan_::pre_K |
| int fastsum_plan_::n |
FS__ - fast summation.
expansion degree
Definition at line 106 of file fastsum.h.
Referenced by fastsum_init_guru_kernel(), fastsum_init_guru_source_nodes(), and fastsum_init_guru_target_nodes().
| int fastsum_plan_::Ad |
near field
number of spline knots for nearfield computation of regularized kernel
Definition at line 118 of file fastsum.h.
Referenced by fastsum_init_guru_kernel(), fastsum_trafo(), and SearchBox().
1.8.6