[SciPy-Dev] Proposal to translate hyp2f1 for complex numbers into Cython

[Ralf Gommers]

On Sun, Jun 20, 2021 at 5:06 AM Steppi, Albert <
Albert_Steppi at hms.harvard.edu> wrote:

> Hi everyone,
>
> I've submitted the PR gh-14256, which is a beginning towards moving the
> implementation of Gauss's hypergeometric function hyp2f1 for complex
> numbers
> from Fortran into Cython. Josh Wilson mentioned at
>
> https://github.com/scipy/scipy/pull/8151#issuecomment-845227864
>
> that this would be appreciated, and I'd like to work on this little by
> little in
> my spare time. The current Fortran implementation has several outstanding
> issues gh-4894, gh-7340, gh-8054, and gh-8083. Pull requests gh-8110 and
> gh-8151 were submitted by GitHub user FormerPhysicist to fix some of the
> outstanding issues but these have languished for almost four years now due
> to a
> lack of reviewers conversant in both numerical computation of special
> functions
> and Fortran 77. This PR has a fix for gh-7430. I intend to address other
> defects in the implementation of hyp2f1 in future PRs. Please see my
> opening
> comment in gh-14256 for more information on the contents of this PR and
> plans
> for the future.
>

This sounds great. hyp2f1 has given us headaches for a long time. Thanks
for working on this Albert!

Cheers,
Ralf


> Feel free to join the discussion of this update in gh-14256!
>
>
> Thanks,
> Albert
>
> Albert Steppi III, PhD
> Scientific Software Developer
> Laboratory of Systems Pharmacology
> Harvard Medical School
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