I have no idea why matlab does not understand this simple if function, any idea?

Question

Amirhossein 2013-12-24

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评论： Amirhossein 2013-12-24

Simply put, this if condition never gets satisfied. It does work for other ns like 0 0.2,1.6,2 etc but does not work for n==1.2. Is this a software bug? I am using Matlab R2012a

for n=0:0.2:2
    if n==1.2
        test1=1
    end
end

Thanks

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Answer 1

Walter Roberson 2013-12-24

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http://matlab.wikia.com/wiki/FAQ#Why_is_0.3_-_0.2_-_0.1_.28or_similar.29_not_equal_to_zero.3F

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Amirhossein 2013-12-24

Thanks Walter. I knew there was something deep going on here. I think the problem is that by default Matlab does not show the complete number. It is showing this to me: 1.200000000000000, so I thought that is the whole thing but I guess it is not.

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