Re: bug in bnrstark

[Karim BELABAS <Karim.Belabas@math.u-psud.fr>]

On Tue, 5 Nov 2002, Igor Schein wrote:
> On Tue, Nov 05, 2002 at 06:32:57PM +0100, Karim BELABAS wrote:
>> On Tue, 5 Nov 2002, Bill Allombert wrote:
>>> There is a bug in bnrstark:
>>> ? allocatemem(2^25);
>>> ? B=bnfinit(quadpoly(13,a));
>>> ? C=bnrinit(B,409,1);
>>> ? bnrstark(B,Mat([5]))
>>>   ***   forbidden multiplication t_VEC * t_VEC.
>>
>> Assuming you meant
>>
>>   ? bnrstark(C,Mat([5]))
>>
>> in that last line [ I get "incorrect bigray field otherwise" ], I can't
>> reproduce your problem in 2.2.5 (development CHANGES-1.580) [Linux + ix86].
>> I get a stack overflow, with the specified stack size, and a (presumably
>> correct) result otherwise in about 15 minutes (100MB stack).
>
> It's most likely seed-dependent.

Possibly.

By the way, rnfkummer(C, Mat([5])) succeeds in 0.5s, default stack.

    Karim.
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Karim Belabas                    Tel: (+33) (0)1 69 15 57 48
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