Can anyone tell me in how many nanoseconds these functions will be executed?
They all take 34.159 clock cycles. So if you're running at 3.25GHz, that's 34.159/3.25x109 seconds.
Jonnin, since you got a different result, your hardware must be defective. I suspect it's heat related. Maybe the flatulator has a bad bearing. That happened to me once and fixing it was a real stinker!