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Re: OT: negative zeros with ATLAS 3.8.4.x


From: Marco Caliari
Subject: Re: OT: negative zeros with ATLAS 3.8.4.x
Date: Wed, 20 Apr 2011 17:45:57 +0200 (CEST)
User-agent: Alpine 1.00 (DEB 882 2007-12-20)

On 11-Apr-2011, Marco Caliari wrote:

| Dear maintainers,
|
| the following code
|
| clear all
| m = 45;
| y = linspace(0,1,m+1)';
| y = y(1:m);
| F = [0:m-1].'*2*pi*y.';
| F(:,1)
|
| produces some strange negative zeros (in random positions) with Octave
| 3.4.0 and ATLAS 3.8.4.x (x=1 or x=2, Core232SSE3), whereas everything is
| fine with ATLAS 3.8.3. So, I suspect a bug in ATLAS (uninitialized
| values?). Maybe someone is able to write a neat C code to submit to ATLAS
| developers and/or to check that there is surely no fault in Octave.

The problem is fixed in ATLAS 3.8.4.3

https://sourceforge.net/tracker/?func=detail&aid=3286533&group_id=23725&atid=379482

Marco


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