Toom-8 testing (mpz level)

Joerg Arndt arndt at
Sat Oct 10 03:01:53 CEST 2009

* Paul Zimmermann <Paul.Zimmermann at> [Oct 08. 2009 18:52]:
>        Hi,
> > From: Torbjorn Granlund <tg at>
> > Date: Wed, 07 Oct 2009 13:49:40 +0200
> > 
> > bodrato at writes:
> > 
> >   Dear Paul, Torbjorn and others...
> >   
> >   I know that the answer can be much less easy than the question, but..
> >   
> >   > please could you update your graphics with the new FFT code at
> >   >
> >   
> >   Will this code ever be integrated in GMP?
> >   
> > There are legal problems with that code wrt GNU.  Paul, Pierrick, Alex and
> > myself have code there.  My code is already assigned to the FSF.  Paul
> > used to have assignments, but revoked them when a few years ago (stating
> > that it was a reaction to that I released development code under the GPL
> > (as opposed to the LGPL)).
> > 
> > I have not been able to get assignments for Pierrick's and Alex's work,
> > despite a number of attempts.
> I'd like to clarify this. I did not revoke my assignment for the new FFT code.
> On the contrary, I sent a mail in December 2006 to the FSF (Torbjörn you were
> in cc) telling that my contribution to the new FFT was covered by my previous
> "assign future" papers. Pierrick and Alex also sent assignments for that work.
> Thus I see no legal problems with this code.

Here is what I did several times in the past:
when people ask for permission to use some of my
(GPLed) code for software with incompatible licenses
(including for commercial closed source products),
I let them specify exactly which part of the code
they need and allow them (via email) to do
whatever they like (whith exactly the snapshot).

With multiple authors this should also
be possible as long as all of them agree.

cheers,  jj
...if you don't see this mail, I have been banned 8-))

> Paul Zimmermann
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