This is fascinating, I really did not think it was possible to implement even a tiny subset of C in just 512 bytes of x86 code. Using atoi() as a generic hash function is a brilliantly awful hack!
Hashes are perhaps the holy-grail of computer-science. With a good hash, we can just side-step all the hard problems by trading them for an even harder problem (hash collisions), and then we just ignore that harder problem. Brilliant. (sticks fingers in ears)
