floating point operations with and without Custom instruction floating point hardware

Also if you declare constants and want to use single precision hardware use 'f' after the value otherwise the compiler will treat it as a double precision value (and the hardware will not be used).

i.e. instead of a = 0.0 use a = 0.0f instead. Otherwise you would get this behavior even with a hardware single precision multiplier:

y = 2.0 * 3.0; // compiler will treat this a double precision and not use hardware

y = 2.0f * 3.0f; // compiler will use single precision hardware