Small micro benchmark for Java vs C++: howto?

[Mark Thornton]

Wouldn't a BadMath VM Option make more sense than a BadMath class since you're not going to know whether you need it or not until after you've written the code?

No because the programmer has to take responsibility for writing code that will tolerate less accurate results. They may also have some code which while not performance critical requires the full accuracy promise of Math or even StrictMath.