Could have been said more kindly, but the point is accurate. This reads like C code that happens to be written in Python. There is a lot of fiddly bit-twiddlin

Could have been said more kindly, but the point is accurate. This reads like C code that happens to be written in Python. There is a lot of fiddly bit-twiddling operations. The main issue — besides not using 2to3 — is that / in Python3 is interpreted as floating point division, whereas it used to be integer division if operands were integers. Replacing / by // in the relevant code blocks might help? Or getting another implementation of the RNG?