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[Octave-bug-tracker] [bug #56511] tanh returns NaN for certain complex v


From: Dmitri A. Sergatskov
Subject: [Octave-bug-tracker] [bug #56511] tanh returns NaN for certain complex values in Windows under version 5.1.0 and 4.2.2 but not in Linux under 4.2.2.
Date: Tue, 18 Jun 2019 18:19:36 -0400 (EDT)
User-agent: Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:67.0) Gecko/20100101 Firefox/67.0

Follow-up Comment #2, bug #56511 (project octave):

On linux i see this:



octave:26> tanh(366+1.0e-6*i)
ans =   1.0000e+00 + 4.9407e-324i
octave:27> tanh(367+1.0e-6*i)
ans =  1
 


Dmitri.


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