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iNFFT - Plan

The library defines the structure infft_plan. The members direct_plan and infft_flags are already discussed. Table 5 shows part of the remaining members.


Table 5: More important members of infft_plan.
type name description size (in *type)
double* w weights $ {w}$ $ M$
double* w_hat damping factors $ {\hat w}$ $ N_{\text{\tiny $\Pi$}}$
fftw_complex* given_f right hand side $ M$
fftw_complex* f_hat_iter actual solution $ N_{\text{\tiny $\Pi$}}$
fftw_complex* f_hat_iter_2nd 2nd solution (ITERATE_2nd) $ N_{\text{\tiny $\Pi$}}$
fftw_complex* r_iter residual vector $ {r}$$ _{l+1}$ $ M$
double dot_r_iter $ \Vert$$ {r}$$ _{l+1}\Vert _{\mbox{\boldmath\scriptsize {${W}$}}}^2$  
double dot_r_iter_old $ \Vert$$ {r}$$ _{l}\Vert _{\mbox{\boldmath\scriptsize {${W}$}}}^2$  



Stefan Kunis 2004-09-03