Same kind of four-tuples, just with 128 bit numbers instead of 32 bit ones for the addresses. If you wanted to do this for a gazillion rules and micro-optimize

Same kind of four-tuples, just with 128 bit numbers instead of 32 bit ones for the addresses. If you wanted to do this for a gazillion rules and micro-optimize memory use, you could use indexed ip references in the memory representation, same way as vertices are addressed in GPU programming - would help for v4 as well.