sftpack_test, a FORTRAN90 code which calls sftpack(), which carries out some "slow" Fourier transforms, that is, Fourier transforms without the techniques that allow for very fast computation.


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sftpack, a FORTRAN90 code which implements the slow Fourier transform, intended as a teaching tool and comparison with the Fast Fourier Transform (FFT).

Source Code:

Last revised on 26 August 2020.