Floating point representations seem to do integer arithmetic correctly - why?

Question

I\'ve been playing around with floating point numbers a little bit, and based on what I\'ve learned about them in the past, the fact that 0.1 + 0.2 ends up bein

Answer 1

Integers withing the representable range are exactly representable by the machine, floats are not (well, most of them).

If by "basic integer math" you understand "feature", then yes, you can assume correctly implementing arithmetic is a feature.