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[Octave-bug-tracker] [bug #41305] error: eigs: error -14 in dneupd

From: Pantxo Diribarne
Subject: [Octave-bug-tracker] [bug #41305] error: eigs: error -14 in dneupd
Date: Thu, 23 Jan 2014 13:43:40 +0000
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:26.0) Gecko/20100101 Firefox/26.0

Follow-up Comment #12, bug #41305 (project octave):

I could check that, for me, the failure is deterministic: by varying the
opt.tol  parameter I could define the threshold tolerance t_tol for a
particular seed (137 on octave 3.6.4). 

The probability of failure (computed over 100 trials) is either 0 with
"opt.tol = t_tol + eps/2" or 1 with "opt.tol = t_tol - eps/2". 



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