[plt-scheme] More PLT Scheme as an Alternative to Matlab

From: Doug Williams (m.douglas.williams at gmail.com)
Date: Fri Aug 14 00:06:08 EDT 2009

As far as I know, PLT Scheme currently does all of its calculations in
double-precision. But, I can control the stored representation of the
underlying representation now. It's that structure than can allow us to code
efficient butterfly addressing for ffts, etc for the numerical analysis
code. We can worry about compiler efficiency in the future.

On Thu, Aug 13, 2009 at 10:01 PM, Robby Findler <robby at eecs.northwestern.edu
> wrote:

> I think Doug is saying that the user might want, say, 128 bits of
> precision in their floating point numbers and asking what to do if
> mzscheme's floats don't support that. (Or do mz's floats support all
> those different sizes?)
> Robby
> On Thu, Aug 13, 2009 at 10:55 PM, Eli Barzilay<eli at barzilay.org> wrote:
> > On Aug 13, Doug Williams wrote:
> >> That is the default. But, we want to user to be able to control the
> >> representation for numerical analysis reasons, too. So, we're
> >> allowing both.
> >
> > But if you don't use external libraries, then you're better off just
> > checking the inputs, but use Scheme values directly.
> >
> > --
> >          ((lambda (x) (x x)) (lambda (x) (x x)))          Eli Barzilay:
> >                    http://barzilay.org/                   Maze is Life!
> > _________________________________________________
> >  For list-related administrative tasks:
> >  http://list.cs.brown.edu/mailman/listinfo/plt-scheme
> >
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.racket-lang.org/users/archive/attachments/20090813/09ed65c2/attachment.html>

Posted on the users mailing list.