Bug in mpz_mul with --disable-fft option... ?
tg at gmplib.org
Wed Jun 17 23:38:10 CEST 2009
"Yves Gallot" <galloty at orange.fr> writes:
> I think I have fixed this problem. Please update from the mercurial
> repository, http://gmplib.org:8000/gmp-4.3/ and please report back if
> the problem is now gone.
Thanks Torbjörn, no bug with the new version of toom44_mul.c.
Well, finally Toom4 allocates about 8.3 x the size of operands and
the FFT 7.6 x only. FFT is faster and smaller !
I am sincerely sorry about that...
You might want to try the toom44_mul.c from the "unstable" repo
instead. Niels Möller put its memory needs on a diet.
You should also grab its itch function from gmp-impl.h.
Then make sure to test the result well!
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