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Karim Belabas on Thu, 17 Nov 2022 23:29:33 +0100
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- To: "Ruud H.G. van Tol" <rvtol@isolution.nl>
- Subject: Re: t_VECSMALL / GEN
- From: Karim Belabas <Karim.Belabas@math.u-bordeaux.fr>
- Date: Thu, 17 Nov 2022 23:28:04 +0100
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- In-reply-to: <516a16d6-307a-c7c1-6da7-eb1e65e232fe@isolution.nl>
- Mail-followup-to: "Ruud H.G. van Tol" <rvtol@isolution.nl>, pari-dev@pari.math.u-bordeaux.fr
- References: <516a16d6-307a-c7c1-6da7-eb1e65e232fe@isolution.nl>
* Ruud H.G. van Tol [2022-11-17 13:36]:
> Is this on purpose?
>
> ? forperm(digits(27,2),p,print(fromdigits(p,2)))
> *** at top-level: ...erm(digits(27,2),p,print(fromdigits(p,2)))
> *** ^-----------------
> *** fromdigits: incorrect type in fromdigits (t_VECSMALL).
> *** Break loop: type 'break' to go back to GP prompt
> break>
>
> No problem to cast it, but feels unnecessary :)
The function for this existed internally but with a different semantic
(and a bug), so it was actually slightly annoying to implement it.
I commited a patch to the 'master' branch that supports
fromdigits(t_VECSMALL, b)
also in the case when b < -1 or the vecsmall contains negative integers.
(The internal libpari function assumed b > 1 and handled vecsmall
components as unsigned integers.)
Thanks for your report !
Cheers,
K.B.
--
Karim Belabas / U. Bordeaux, vice-président en charge du Numérique
Institut de Mathématiques de Bordeaux UMR 5251 - (+33) 05 40 00 29 77
http://www.math.u-bordeaux.fr/~kbelabas/
`