Karim BELABAS on Sun, 14 Sep 2003 17:31:25 +0200 (MEST)

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Re: quadclassunit() regression

On Thu, 14 Aug 2003, Igor Schein wrote:
> ? quadclassunit(5)
>   ***   sorry, buchxxx couldn't deal with this field PLEASE REPORT!.
> It was introduced some time after 2.2.5 release

I introduced a minimum sub-factorbase size to avoid problems with some
discriminants (class group could not be computed). Unfortunately for very
small discriminant (actually only 5:-) this may not be possible using primes
up to Bach bound.

So I made sure the factor base bound is large enough to get rid of this
problem [ used the same magic constant "20" as in buchall() for general
fields ]

Fixed in CVS.


Karim Belabas                     Tel: (+33) (0)1 69 15 57 48
Dép. de Mathématiques, Bât. 425   Fax: (+33) (0)1 69 15 60 19
Université Paris-Sud              http://www.math.u-psud.fr/~belabas/
F-91405 Orsay (France)            http://www.parigp-home.de/  [PARI/GP]