bug in poldegree?

Markus Endres on Sun, 03 Oct 2004 17:22:43 +0200

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bug in poldegree?

To: pari-users <pari-users@list.cr.yp.to>
Subject: bug in poldegree?
From: Markus Endres <me@mendres.org>
Date: Sun, 03 Oct 2004 17:21:21 +0200
Delivery-date: Sun, 03 Oct 2004 17:22:43 +0200
Mailing-list: contact pari-users-help@list.cr.yp.to; run by ezmlm
Organization: mendres.org

hi at all,

on my system (debian) I use pari/gp 2.2.6 and the newest cvs-version
2.2.8. 

now, lets have a look at the following polynomial:

P=
(2.5134558550000000000000000000000000000000000000000000000000000000000000000000000 E-88 + 0.E-87*I)*y^2 + (1.0000000000000000000000000000000000000000000000000000000000000000000000000000000 + 0.E-86*I)*y + (1.6086117470000000000000000000000000000000000000000000000000000000000000000000000 E-86 - 1.6086117470000000000000000000000000000000000000000000000000000000000000000000000 E-86*I)

I got this polynomial from some computings under 2.2.8. if I want to
know

? poldegree(P)
= -2147483647

I get this strange degree, it should be 2.

under pari/gp 2.2.6 and the stable version everything is ok. 

is this a bug? 

cheers

markus

Follow-Ups:
- Re: bug in poldegree?
  - From: Karim Belabas <Karim.Belabas@math.u-psud.fr>
- Re: bug in poldegree?
  - From: John Kerl <kerl@mathpost.la.asu.edu>

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