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

On Thu, Aug 13, 2009 at 11:06 PM, Doug
Williams<m.douglas.williams at gmail.com> wrote:
> 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.

What is butterfly addressing?

There are some search results for it, but nothing obvious stands out.