-void pareto_init(struct zipf_state *zs, unsigned long nranges, double h);
-unsigned long long pareto_next(struct zipf_state *zs);
+void pareto_init(struct zipf_state *zs, uint64_t nranges, double h, unsigned int seed);
+uint64_t pareto_next(struct zipf_state *zs);
+void zipf_disable_hash(struct zipf_state *zs);