Re: erfc() behavior change

Igor Schein on Thu, 12 May 2005 17:51:37 +0200

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Re: erfc() behavior change

To: pari-dev list <pari-dev@list.cr.yp.to>
Subject: Re: erfc() behavior change
From: Igor Schein <igor@txc.com>
Date: Thu, 12 May 2005 11:49:27 -0400
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On Thu, May 12, 2005 at 12:13:15PM +0200, Bill Allombert wrote:

> Someone should check whether exp() given the same precision in 2.2.9 and
> 2.2.10. I am afraid the use of Newton iterations for large precisions
> might break that...

\\ 2.2.9
? precision(exp(-2^10))
462
\\ 2.2.10
? precision(exp(-2^10))
38

Igor

Follow-Ups:
- Re: erfc() behavior change
  - From: Bill Allombert <allomber@math.u-bordeaux.fr>

References:
- erfc() behavior change
  - From: Igor Schein <igor@txc.com>
- Re: erfc() behavior change
  - From: Walter Neumann <neumann@math.columbia.edu>
- Re: erfc() behavior change
  - From: Karim Belabas <Karim.Belabas@math.u-psud.fr>
- Re: erfc() behavior change
  - From: Bill Allombert <allomber@math.u-bordeaux.fr>

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