Interesting. Where did you get that impression from and what did you
> 2010/8/25 Jordi Gutiérrez Hermoso <address@hidden
>> 2010/8/25 Jordi Gutiérrez Hermoso <address@hidden
>> > On 25 August 2010 09:13, Michael Creel <address@hidden
>> >> octave:1> 0.3*2 == 0.6
>> >> ans = 1
>> >> octave:2> 0.3*3 == 0.9
>> >> ans = 0
>> >> octave:3>
>> > http://docs.sun.com/source/806-3568/ncg_goldberg.html
>> Oops, sorry, I hit the "send" button too soon.
>> Anyways, yes, this is completely normal. 0.3 has an infinite binary
>> expansion because its denominator has factors other than 2, so you'll
>> get a rounding error. Use something like abs(0.3*3 - 0.9) < 10*eps
>> instead or whatever seems like an appropriate approximation.
> Right, I'm aware of that. My question is whether or not Octave's comparison
> of floats takes it into account. My impression was that it does, so I was
> surprised by this.