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[Octave-bug-tracker] [bug #43734] Tolerance problem in BIST tests for ch

From: Avinoam Kalma
Subject: [Octave-bug-tracker] [bug #43734] Tolerance problem in BIST tests for chop.m on MS Windows
Date: Sat, 06 Dec 2014 16:41:26 +0000
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/39.0.2171.71 Safari/537.36 
Follow-up Comment #6, bug #43734 (project octave):

Hi,

I do not think that adding a tolerance here is a good solution.
I would expect that chop(e,3) and 2.72 will have the same
numerical error, so that even though computer 2.72 will 
not be the mathematical 2.72, due to limited binary representation,
but chop (e,3)-2.72 should be zero.

But...

>> chop(e,3) - 2.72
ans =   4.4409e-016
 

Thanks,

Avinoam


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