[Top][All Lists]

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Gcl-devel] Re: [Maxima] Bugs in gcl cause maxima build failures

From: Camm Maguire
Subject: Re: [Gcl-devel] Re: [Maxima] Bugs in gcl cause maxima build failures
Date: 21 May 2002 18:21:46 -0400


Raymond Toy <address@hidden> writes:

> >>>>> "Camm" == Camm Maguire <address@hidden> writes:
>     Camm> Greetings!
>     Camm> Raymond Toy <address@hidden> writes:
>     >> >>>>> "Camm" == Camm Maguire <address@hidden> writes:
>     >> 
>     Camm> Please keep the gcl-list abreast of these hacks!  Probably all need 
> to
>     Camm> find there way into gcl at some point.
>     >> 
>     >> With your latest changes, I don't really think there is a need for
>     >> this anymore, after you fix the least-positive-normalized-single-float
>     >> issue. :-)
>     >> 
>     Camm> OK, this is now set to the unnormalized result.  I think that's 
> right
>     Camm> from the spec.
> At least for sparc and x86 which implement IEEE FP arithmetic, I don't
> think this is right.  The CLHS says the normalized float must be a
> normalized float.  If you make it the unnormalized one, then you're
> wrong.  And the sparc and x86 have unnormalized numbers.

OK, I guess I misread.  It seemed like the only case in which there
would be a difference would be on non-IEEE systems.

> For the most part, it probably doesn't matter, but some numerical
> algorithms expect them to be right.

I'd like to get it right.

> I can help you get the right values, but I don't know how to tell gcl
> to get the right values.

Please do.  I can get gcl to report whatever we want here, but I don't
yet understand what is intended.  Your help as always most

> Ray
> _______________________________________________
> Maxima mailing list
> address@hidden
> http://www.math.utexas.edu/mailman/listinfo/maxima

Camm Maguire                                            address@hidden
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah

reply via email to

[Prev in Thread] Current Thread [Next in Thread]