[Maxima] Strange Bug(?)
fateman at cs.berkeley.edu
Fri Apr 18 11:49:21 CDT 2008
There is a discussion of inf-inf and (in some sense) similar problems
related to intervals in
intervals x-x also don't simplify to zero e.g. [-1,1] - [-1,1] is
[-2,2] not 0.
> -----Original Message-----
> From: maxima-bounces at math.utexas.edu
> [mailto:maxima-bounces at math.utexas.edu] On Behalf Of Raymond
> Toy (RT/EUS)
> Sent: Friday, April 18, 2008 9:21 AM
> To: Stavros Macrakis
> Cc: ronis at ronispc.chem.mcgill.ca; maxima at math.utexas.edu
> Subject: Re: [Maxima] Strange Bug(?)
> Stavros Macrakis wrote:
> > PS I think there's a good argument to be made for having Maxima do
> > something similar with inf/minf it generates, making each one
> > distinct. I know that someone (Raymond?) is also working on having
> > the simplifier not do inf-inf=>0, but there are lots of places other
> > than the general simplifier which need to be changed (rat
> > representation, compare, etc.).
> I've kind of stopped working on it. It seems to be working,
> but there
> are several places in the code where inf-inf is generated and
> 0 works but returning inf causes problems.
> I believe Barton has a simplus simplifier and he's run into
> similar issues.
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