[SciPy-Dev] Removal of fortran FFTPACK

[Eric Larson]

I plan to merge Peter's PR this coming Monday unless there are objections.

Eric


On Thu, Jul 25, 2019 at 11:00 AM Peter Bell <PeterBell10 at live.co.uk> wrote:

> Hello all,
>
>
>
> As of gh-10493 <https://github.com/scipy/scipy/pull/10493>, pypocketfft
> now implements the discrete sine and cosine transforms meaning it is a
> complete replacement for the fortran FFTPACK library. In gh-10507
> <https://github.com/scipy/scipy/pull/10507>, I have proposed removing the
> fortran code from scipy completely and having scipy.fftpack depend on
> scipy.fft.
>
>
>
> This means that scipy.fftpack will now see some of the additional benefits
> of scipy.fft
> <https://github.com/scipy/scipy/wiki/Release-note-entries-for-SciPy-1.4.0#scipyfft-added>
> such as: long double transforms, GIL release, bluestein’s algorithm,
> improved accuracy and improved multi-dimensional transform performance.
>
>
>
> However, there may be some cases where this affects users. For example, it
> will break anyone importing the private scipy.fftpack._fftpack submodule
> and the DCT and DST type-I are now about two times slower (but orders of
> magnitude more accurate).
>
>
>
> Regards,
>
> Peter
>
>
>
>
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