Support for erfinv - Githubissues

aleaxit / gmpy

General Multi-Precision arithmetic for Python 2.6+/3+ (GMP, MPIR, MPFR, MPC)

https://gmpy2.readthedocs.io/en/latest/

GNU Lesser General Public License v3.0

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Support for erfinv #325

Closed TedTed closed 2 years ago

TedTed commented 2 years ago

Hi, we are possibly interested in using gmpy for an application related to differential privacy; but we would need support for the erfinv function.

How difficult would it be to add support for this to gmpy? Do I understand correctly that we could simply add the corresponding MPFR binding like is done for the other functions, or are there unexpected subtleties?
How fast could we expect the turnaround to be for PR review, merging, and releasing?

Thanks a ton in advance!

casevh commented 2 years ago

I don't see erfinv listed in the MPFR documentation. Do you have an implementation for it?

The source code must be licensed under LGPLv3+ to allow it to be bundled into gmpy2. There maybe other options if that is not possible.

TedTed commented 2 years ago

Sorry, yes, I was looking at different arbitrary-precision computation projects and mixed things up. Thanks for letting us know what the requirements would be if we end up sending a PR to MPFR!