Re: [xmlvm-users] CoreLocation and static double numbers

[Arno P. <ar...@pu...>]

I'm assuming that the location-API in iOS is already using double. In 
that case we should also just offer doubles in the Java-API. The 
programmer needs to know about the consequences of using double; both in 
Java and in Objective-C.

Arno


On 11/8/10 8:38 AM, Panayotis Katsaloulis wrote:
>
> On Nov 8, 2010, at 6:11 PM, Paul Poley wrote:
>
>> Checking equality on double or float values is always fishy.  Unfortunately BigDecimal hasn't yet become a priority, but that would be a much safer implementation.  It doesn't lose precision, making it a good candidate for sensitive numbers, such as currency calculations.
>>
>> If you do go down that route though, make sure to use "compareTo" and not "equals".  E.g. "5.40" does not "equals" "5.4", but "compareTo" will return 0.  Forgive me if I am stating anything you already know.
>>
>> Paul Poley
>
>
> The problem unfortunately is under Obj-C code and not Java.
> :)
>
> I agree with you, but right now, after doing some tests, I have the feeling that actually these values are used by iOS SDK more as a reference (and is checked for being larger/smaller than the specified value) and not really for equality.
> Thus I believe that it will be safe to use double values, for now.
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