fastsum.h File Reference

Header file for the fast NFFT-based summation algorithm. More...

#include "config.h"
#include "nfft3.h"
#include "infft.h"

Go to the source code of this file.

Data Structures
struct	fastsum_plan_
	plan for fast summation algorithm More...

Macros
#define	X(name)   NFFT(name)
	Include header for C99 complex datatype. More...
#define	NF_KUB
#define	EXACT_NEARFIELD   (1U<< 0)
	Constant symbols.
#define	NEARFIELD_BOXES   (1U<< 1)
#define	STORE_PERMUTATION_X_ALPHA   (1U<< 2)

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 More...
void	fastsum_init_guru_kernel (fastsum_plan *ths, int d, kernel k, R *param, unsigned flags, int nn, int p, R eps_I, R eps_B)
	initialize node independent part of fast summation plan More...
void	fastsum_init_guru_source_nodes (fastsum_plan *ths, int N_total, int nn_oversampled, int m)
	initialize source nodes dependent part of fast summation plan More...
void	fastsum_init_guru_target_nodes (fastsum_plan *ths, int M_total, int nn_oversampled, int m)
	initialize target nodes dependent part of fast summation plan More...
void	fastsum_finalize (fastsum_plan *ths)
	finalization of fastsum plan More...
void	fastsum_finalize_source_nodes (fastsum_plan *ths)
	finalization of fastsum plan More...
void	fastsum_finalize_target_nodes (fastsum_plan *ths)
	finalization of fastsum plan More...
void	fastsum_finalize_kernel (fastsum_plan *ths)
	finalization of fastsum plan More...
void	fastsum_exact (fastsum_plan *ths)
	direct computation of sums More...
void	fastsum_precompute_source_nodes (fastsum_plan *ths)
	precomputation for fastsum More...
void	fastsum_precompute_target_nodes (fastsum_plan *ths)
	precomputation for fastsum More...
void	fastsum_precompute (fastsum_plan *ths)
	precomputation for fastsum More...
void	fastsum_trafo (fastsum_plan *ths)
	fast NFFT-based summation More...
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 More...

Detailed Description

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.

Author

Markus Fenn

Date

2003-2006

Definition in file fastsum.h.