How does java add 2 Longs on a 32-bit machine?

Question

Java

Is this the same as with BigInt? Like, first it loads one half in percent, then saves the answer to the cache, counts the second and then combines the answer into one? (with hyphens and so on)

Answer 1

Yes, just like with BigInt...

Answer 2

What's the problem? Naturally, the performance will be lower than on a 64-bit processor, but this is not mathematically impossible. And it is not necessary to save to the cache, you can save it to the register.