Add sample zipf distribution randomizer
[fio.git] / lib / zipf.h
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1#ifndef FIO_ZIPF_H
2#define FIO_ZIPF_H
3
4#include "rand.h"
5
6struct zipf_state {
7 uint64_t nranges;
8 double theta;
9 double zeta2;
10 double zetan;
11 struct frand_state rand;
12};
13
14void zipf_init(struct zipf_state *zs, unsigned long nranges, double theta);
15unsigned long long zipf_next(struct zipf_state *zs);
16
17#endif