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NFFT
3.3.1
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Header file for the fast NFFT-based summation algorithm. More...
Go to the source code of this file.
Data Structures | |
| struct | fastsum_plan_ |
| plan for fast summation algorithm More... | |
Defines | |
| #define | X(name) NFFT(name) |
| Include header for C99 complex datatype. | |
| #define | EXACT_NEARFIELD (1U<< 0) |
| Constant symbols. | |
| #define | NEARFIELD_BOXES (1U<< 1) |
Typedefs | |
| typedef C(* | kernel )(R, int, const R *) |
| typedef struct fastsum_plan_ | fastsum_plan |
| plan for fast summation algorithm | |
Functions | |
| void | fastsum_init_guru (fastsum_plan *ths, int d, int N_total, int M_total, kernel k, R *param, unsigned flags, int nn, int m, int p, R eps_I, R eps_B) |
| initialization of fastsum plan | |
| void | fastsum_finalize (fastsum_plan *ths) |
| finalization of fastsum plan | |
| void | fastsum_exact (fastsum_plan *ths) |
| direct computation of sums | |
| void | fastsum_precompute (fastsum_plan *ths) |
| precomputation for fastsum | |
| void | fastsum_trafo (fastsum_plan *ths) |
| fast NFFT-based summation | |
| C | regkern (kernel k, R xx, int p, const R *param, R a, R b) |
| regularized kernel with K_I arbitrary and K_B smooth to zero | |
| C | kubintkern (const R x, const C *Add, const int Ad, const R a) |
| cubic spline interpolation in near field with even kernels | |
Header file for the fast NFFT-based summation algorithm.
reference: M. Fenn, G. Steidl, Fast NFFT based summation of radial functions. Sampl. Theory Signal Image Process., 3, 1-28, 2004.
Definition in file fastsum.h.
1.7.6.1