t/nvmept_trim: increase transfer size for some tests
[fio.git] / lib / zipf.h
1 #ifndef FIO_ZIPF_H
2 #define FIO_ZIPF_H
3
4 #include <inttypes.h>
5 #include "rand.h"
6 #include "types.h"
7
8 struct zipf_state {
9         uint64_t nranges;
10         double theta;
11         double zeta2;
12         double zetan;
13         double pareto_pow;
14         struct frand_state rand;
15         uint64_t rand_off;
16         bool disable_hash;
17 };
18
19 void zipf_init(struct zipf_state *zs, uint64_t nranges, double theta,
20                double center, unsigned int seed);
21 uint64_t zipf_next(struct zipf_state *zs);
22
23 void pareto_init(struct zipf_state *zs, uint64_t nranges, double h,
24                  double center, unsigned int seed);
25 uint64_t pareto_next(struct zipf_state *zs);
26 void zipf_disable_hash(struct zipf_state *zs);
27
28 #endif