Generative Fast Fourier Transforms (GFFT)
0.3
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Danielson-Lanczos section of the decimation-in-frequency FFT version. More...
#include <gfftalgfreq.h>
N | current transform length |
T | value type of the data array |
S | sign of the transform: 1 - forward, -1 - backward |
This template class implements resursive metaprogram, which runs funciton apply() twice recursively at the end of the function apply() with the half of the transform length N until the simplest case N=2 has been reached. Then function _spec2 is called. Therefore, it has two specializations for N=2 and N=1 (the trivial and empty case).