gf128_genmultable
gf128_genmultable(h, &t->tbls[0]);
gf128_genmultable(h2, &t->tbls[1]);
gf128_genmultable(h3, &t->tbls[2]);
gf128_genmultable(h4, &t->tbls[3]);
void gf128_genmultable(struct gf128 h, struct gf128table *t);