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Bill Allombert on Fri, 05 Jan 2024 14:48:43 +0100
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Re: binomial coefficient with negative args
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- To: pari-users@pari.math.u-bordeaux.fr
- Subject: Re: binomial coefficient with negative args
- From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Date: Fri, 5 Jan 2024 14:48:38 +0100
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On Fri, Jan 05, 2024 at 01:23:54PM +0100, Christian Krause wrote:
> Hello,
> I noticed that binomial(-2,-4) still yields 0 in PARI/GP 2.15.4 although
> Kronenburg's extension was apparently added to src/basemath/bibli2.c. The
> documentation appears not to include the behavior for negative k. Was there
> a decision to keep the old behavior for backward compatibility or why do I
> still get 0 as result?
Hello Christian,
The change was done to the development branch.
It will be part of the next stable release 2.17.0.
We do not backport interface change to the current stable branch.
Cheers,
Bill