[RESOLVED] 20.0 - 12.0 = 7.999999... ???

[opus]

Hi, I'm using an array of PointF variables.
When calculating with the coordinates I something like 20.0 - 12.0 = 7.9999
The PointF-var has a X and Y variable (both are singles), why on earth do I get such a result when using it like this:
NewsingleVar = MyPointF(1).x -MyPointF(2).x

[Fromethius]

I had this problem in a game I wrote. It's because they are floats and something about accuracy loss or something like that..

Just use the overloaded version of the ToString method to format it. Or some other format method.

[jmcilhinney]

This is one of the drawbacks of using floating-point numbers. If all values are whole numbers then you should use Point rather than PointF values. Otherwise you could try rounding results to a specific number of significant digits if all your original values are also to that many significant digits. If there's division involved anywhere it starts to get more complex though.

[opus]

Thanks for the reply.
I need the values to be single, so there no change needed.
I found this one only will testing and got a bit worried.
Looks like I didn't do anything wrong, so I'm fine.
Thanks