Re: [sc-users] Re: Re: How many years?

[Bernardo Barros <bernardobarros2@xxxxxxxxx>]

Hi,

Is there a (or kind of) Fraction class? (probably there is but I don't remember)



2010/9/19 Tim Blechmann <tim@xxxxxxxxxx>:
>> But the computer doesn't knows that :-/
>> I can't find a reference or explanation nor can deduce it myself.
>>
>> 0.33333333333333 * 3; // 0.99999999999999
>> 0.33333333333334 * 3; // 1
>> 0.33333333333335 * 3; // 0.0000000000001
>> 0.333333333333333 * 3 // 1
>>
>> Is this a feature of the floating point representation?
>> When one is one?
>
> well, floating point numbers are not able to represent the number 1/3. [1]
> may be interesting to read, as it describes some of the problems of using
> floating-point math.
>
> cheers, tim
>
> [1] http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems
>
>
>
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