Flags
NFFT3.PRE_PHI_HUT — ConstantPRE_PHI_HUTprecompute and store values $\hat{\phi}(k)$ of the Fourier transform of the window function $\hat{\phi}$.
NFFT3.FG_PSI — ConstantFG_PSIfast Gaussian gridding.
NFFT3.PRE_LIN_PSI — ConstantPRE_LIN_PSIlinear interpolation of the window function from a lookup table.
NFFT3.PRE_FG_PSI — ConstantPRE_FG_PSIfast Gaussian gridding.
NFFT3.PRE_PSI — ConstantPRE_PSIprecomputation based on tensor product structure of the window function.
NFFT3.PRE_FULL_PSI — ConstantPRE_FULL_PSIcalculate and store all values $\tilde{\psi}(x_j - \frac{1}{n} \odot l)$.
NFFT3.MALLOC_X — ConstantMALLOC_Xallocate memory for node $x_j$.
NFFT3.MALLOC_F_HAT — ConstantMALLOC_F_HATallocate memory for coefficient$\hat{f}_k$.
NFFT3.MALLOC_F — ConstantMALLOC_Fallocate memory for approximate function value $f_j$.
NFFT3.FFT_OUT_OF_PLACE — ConstantFFT_OUT_OF_PLACEFFTW uses disjoint input/output vector.
NFFT3.FFTW_INIT — ConstantFFTW_INITinitialize FFTW plan.
NFFT3.NFFT_SORT_NODES — ConstantNFFT_SORT_NODESinternal sorting of the nodes $x_j$ that may increase performance.
NFFT3.NFFT_OMP_BLOCKWISE_ADJOINT — ConstantNFFT_OMP_BLOCKWISE_ADJOINTblockwise calculation for adjoint NFFT in the case of OpenMP.
NFFT3.NFCT_SORT_NODES — ConstantNFCT_SORT_NODESinternal sorting of the nodes $x_j$ that may increase performance.
NFFT3.NFCT_OMP_BLOCKWISE_ADJOINT — ConstantNFCT_OMP_BLOCKWISE_ADJOINTblockwise calculation for adjoint NFFT in the case of OpenMP.
NFFT3.NFST_SORT_NODES — ConstantNFST_SORT_NODESinternal sorting of the nodes $x_j$ that may increase performance.
NFFT3.NFST_OMP_BLOCKWISE_ADJOINT — ConstantNFST_OMP_BLOCKWISE_ADJOINTblockwise calculation for adjoint NFFT in the case of OpenMP.
NFFT3.FFTW_MEASURE — ConstantFFTW_MEASUREfind optimal plan by executing several FFTs and compare times.
NFFT3.FFTW_DESTROY_INPUT — ConstantFFTW_DESTROY_INPUTan out-of-place transform is allowed to overwrite the input array with arbitrary data.
NFFT3.FFTW_UNALIGNED — ConstantFFTW_UNALIGNEDthe algorithm may not impose any unusual alignment requirements on the input/output arrays (not necessary in most context).
NFFT3.FFTW_CONSERVE_MEMORY — ConstantFFTW_CONSERVE_MEMORYconserving memory.
NFFT3.FFTW_EXHAUSTIVE — ConstantFFTW_EXHAUSTIVEbehaves like FFTW_PATIENT with an even wider range of tests.
NFFT3.FFTW_PRESERVE_INPUT — ConstantFFTW_PRESERVE_INPUTinput vector is preserved and unchanged.
NFFT3.FFTW_PATIENT — ConstantFFTW_PATIENTbehaves like FFTW_MEASURE with a wider range of tests.
NFFT3.FFTW_ESTIMATE — ConstantFFTW_ESTIMATEuse simple heuristic instead of measurements to pick a plan.
NFFT3.FFTW_WISDOM_ONLY — ConstantFFTW_WISDOM_ONLYa plan is only created if wisdom from tests is available.