So I've started to check out what's involved in making games on the iPhone, you know like OpenGL ES, Open AL etc - the usual stuff... In amongst my fooling around, I've started to create a Vector class for doing some basic physics. While I was researching how to do that correctly, I came across a realization. The ARM processor of the iPhone and iPod Touch doesn't have an FPU (Floating Point Unit) so to get any decent performance out of a game, i'll have to get to grips with Fixed Point maths (again).

If you're looking to get up to scratch on that too, this might come in handy.

There's a helluva lot to learn for anyone making the move from the desktop to the iPhone... Well it's not as simple as a lot of people have made it out to be.

I think this is the most geeky post i've ever written.

2 Responses to “fixed point arithmetic on the iPhone”

  1. Beddardo:

    Jeeesus Christ man… and I thought revising GCSE maths was bad! What the hell does all that stuff mean?

  2. Andrew:

    I haven’t a clue… My geekiness is just an act…

    ;-)

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