GitHub - 0x0mer/CasNum

CasNum is a Python library that implements arbitrary precision arithmetic using compass and straightedge geometric constructions. Numbers are represented as points on a plane, and all arithmetic and logical operations (add, multiply, divide, AND, OR, XOR) are performed through classical Euclidean constructions. As a proof of concept, the library is integrated into a modified PyBoy Game Boy emulator, replacing Python's native int so every ALU opcode runs entirely through geometric constructions. The result is a functional (if extremely slow) emulator capable of running Pokémon Red, with a ~15-minute boot time and ~0.5–1 FPS after caching. Performance is managed via Python's lru_cache. The project is openly described as a novelty built for the experience rather than practical use.