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[Octave-bug-tracker] [bug #42583] log2() returns inaccurate result for m


From: Carlo de Falco
Subject: [Octave-bug-tracker] [bug #42583] log2() returns inaccurate result for many integer powers of 2, unlike Matlab
Date: Thu, 19 Jun 2014 08:54:39 +0000
User-agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:30.0) Gecko/20100101 Firefox/30.0

Follow-up Comment #4, bug #42583 (project octave):

With Octave 3.8.2 compiled with gcc 4.7 0n OSX 10.9.3, 
I get:


>> n = -1074:1023;
>> errors = find(log2(pow2(n)) ~= n) - 1075
errors = []




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