Re: rnflllgram() regression

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

On Sun, 2 Mar 2003, Igor Schein wrote:
> ? nf=nfinit(y^9-10*y^8-y^7+7*y^6+y^5-y^4+5*y^2+9*y+4);
> ? pol=x^9-10*x^8-10*x^7+6*x^6-4*x^5+7*x^4+7*x^3+8*x^2-1;
> ? rnflllgram(nf,pol,rnfpseudobasis(nf,pol));
>   ***   not a definite matrix in lllgram
>
> It was broken some time between 2.2.4 and 2.2.5

Precision loss. It occured in 2.2.4 also, but was slightly less acute
(different internal nf format), hence was hidden / disregarded [ and the
result was incorrect: not LLL reduced ].

At \p50 it works.

    Karim.
-- 
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