> david eddy wrote:
> > The important reason a LL-test goes wrong is due to
> > using floating point FFT to perform exact integer arithmetic.
>
Richard Woods wrote
> No, that's not it.
.......
Yes thank you.
It figures that if one iteration has a non-sero probability of rounding error
then 30,000,000 of them will have 100% error rate.
So the gradual increase in error rate with exponent size (which would make
choosing ~30%
errror rate as the optimum) does not apply. We have effectively got a step
function.
The range for a given FFT size chooses itself.
David Eddy
_________________________________________________________________
Be one of the first to try Windows Live Mail.
http://ideas.live.com/programpage.aspx?versionId=5d21c51a-b161-4314-9b0e-4911fb2b2e6d
_______________________________________________
Prime mailing list
[email protected]
http://hogranch.com/mailman/listinfo/prime