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[Octave-bug-tracker] [bug #51282] Column vector and equality operator ar
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From: |
Mike Miller |
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Subject: |
[Octave-bug-tracker] [bug #51282] Column vector and equality operator are not playing nice together. |
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Date: |
Tue, 20 Jun 2017 22:42:15 -0400 (EDT) |
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User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:54.0) Gecko/20100101 Firefox/54.0 |
Follow-up Comment #3, bug #51282 (project octave):
What you want to ask Octave for is
d = (-10:10)./10;
What you are asking Octave for is to add multiples of 0.1 to a starting value
of -1 until it hits +1.
If you do understand floating point representation, which jwe provided a
pointer for, then you'll know why the following relationship returns false:
>> -1 + 0.1 * 6
ans = -0.40000
>> -1 + 0.1 * 6 == -0.4
ans = 0
That should be enough to explain why the computed range you asked for is
behaving the way it is.
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