BlackBox Component Builder Forums

Please note that C does not have a MOD operator at all (if I remember correctly). It has a 'remainder' operator. Most CPUs have a remainder operation in hardware, not a MOD operation. The difference shows up for negative dividends. The MOD function is actually meaningless for negative divisors becau...

I would avoid the common sub-expression u * u + v * v by evaluating
it only once and storing it in an auxiliary variable.
This is (1) faster and (2) more predictable with respect to floating
point precision.

- Josef