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[ascl:1512.017] FFTLog: Fast Fourier or Hankel transform

FFTLog is a set of Fortran subroutines that compute the fast Fourier or Hankel (= Fourier-Bessel) transform of a periodic sequence of logarithmically spaced points. FFTLog can be regarded as a natural analogue to the standard Fast Fourier Transform (FFT), in the sense that, just as the normal FFT gives the exact (to machine precision) Fourier transform of a linearly spaced periodic sequence, so also FFTLog gives the exact Fourier or Hankel transform, of arbitrary order m, of a logarithmically spaced periodic sequence.

Code site:
https://jila.colorado.edu/~ajsh/FFTLog/index.html
Used in:
http://adsabs.harvard.edu/abs/2000MNRAS.312..257H
Bibcode:
2015ascl.soft12017H

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ascl:1512.017
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