On Feb 15, 7:10 pm, Bill Hart <goodwillh...@googlemail.com> wrote:
> The history of it is that I sent a copy of the correspondence you and
> I had on this issue about 18 months ago to Brian and Jason. You asked
> me if there was a fast way of doing this and I started blathering
> about an algorithm. You turned it into one.
>
> With your permission I can post our email exchange on the subject to the list.
>
> I don't know what Brian and Jason have done with the idea since, but
> the timings seem pretty good.
>
> Certainly the idea to implement this came from both your Toom-3 branch
> (I had forgotten what this branch was all about and thought it was
> just the divexactby3 stuff) and the mention of the improvements on the
> GMP list.
>
> Bill.
>
> 2009/2/15 David Harvey <dmhar...@cims.nyu.edu>:
>
>
>
> > Is the algorithm based on the idea mentioned in Torbjorn's post from
> > last year?
>
> >http://gmplib.org/list-archives/gmp-devel/2008-August/000816.html
>
> > david
>
> > On Feb 15, 10:25 am, ja...@njkfrudils.plus.com wrote:
> >> On Sunday 15 February 2009 14:13:23 David Harvey wrote:
>
> >> > Hi, I'm curious to try this new divide-by-3 code, but I can't find it
> >> > in the repo. Where do I look? How many c/l is it?
>
> >> > david
>
> >> about 2.3c/l , I expect it could be tweeked some more
> >> I never put it in the repo because I never got around to proving it. I'll
> >> give
> >> it a look in the next few days.
>
> >> Brian did put a windows version in though, did you prove it ?
Sorry for my earlier post - Bill has explained better than I could how
I came to know of it.
Brian
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