[nadohs]

Good point bringing up over/underflow, I didn't think much about Nan or infinity, but I did consider potential over/underflows. I originally built an overflow/underflow checker(on the github project), but then re-evaluated it and figured it wasn't really necessary since the default action for number types that overflow/underflow in swift is to throw an error runtime. The person asking the question mentioned another series of operators that exist &+, &-, &*,etc that allow for overflow/underflow to occur on number types in swift.. without the error throwing, which is not the default.