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Bill Allombert on Sat, 14 Oct 2023 20:34:12 +0200
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- To: pari-users@pari.math.u-bordeaux.fr
- Subject: Re: digits(n,-4)
- From: Bill Allombert <Bill.Allombert@math.u-bordeaux.fr>
- Date: Sat, 14 Oct 2023 20:34:08 +0200
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On Sat, Oct 14, 2023 at 07:24:35PM +0200, Ruud H.G. van Tol wrote:
>
> ? fromdigits( [1,3,0], -4 )
> % 4
Note that we do need to know that the set of digits is here.
> ? my(n=4, v=[]); while( n=divrem(n,-4), v=concat(n[2],v); n=n[1] ); v
> % [1, 3, 0]
>
> Is there a better way to do this?
I would start with use digits(n,16) and split the digits.
> Should digits() be changed to support a negative base?
There are too many variants...
Cheers,
Bill.