Use fixed point arithmetic

[Xenoamor]

We should look into using fixed point arithmetic as it will be significantly faster and reduce our required ROM space

[Xenoamor]

Even if you remove all runtime floating point usage it still pulls in all the floating point functions. Pretty annoying. It would be very nice to be able to have floating point constants

[kanflo]

That's odd, the linker should throw all that out if not used...