1#ifndef FIO_ZIPF_H
2#define FIO_ZIPF_H
3
4#include <inttypes.h>
5#include "rand.h"
6
7struct zipf_state {
8	uint64_t nranges;
9	double theta;
10	double zeta2;
11	double zetan;
12	double pareto_pow;
13	struct frand_state rand;
14	uint64_t rand_off;
15	bool disable_hash;
16};
17
18void zipf_init(struct zipf_state *zs, unsigned long nranges, double theta, unsigned int seed);
19unsigned long long zipf_next(struct zipf_state *zs);
20
21void pareto_init(struct zipf_state *zs, unsigned long nranges, double h, unsigned int seed);
22unsigned long long pareto_next(struct zipf_state *zs);
23void zipf_disable_hash(struct zipf_state *zs);
24
25#endif
26