[fio.git] / lib / zipf.h

#ifndef FIO_ZIPF_H
#define FIO_ZIPF_H

#include "rand.h"

struct zipf_state {
	uint64_t nranges;
	double theta;
	double zeta2;
	double zetan;
	double pareto_pow;
	struct frand_state rand;
};

void zipf_init(struct zipf_state *zs, unsigned long nranges, double theta);
unsigned long long zipf_next(struct zipf_state *zs);

void pareto_init(struct zipf_state *zs, unsigned long nranges, double h);
unsigned long long pareto_next(struct zipf_state *zs);

#endif
Commit	Line	Data
e25839d4 JA	1	#ifndef FIO_ZIPF_H
	2	#define FIO_ZIPF_H
	3
	4	#include "rand.h"
	5
	6	struct zipf_state {
	7	uint64_t nranges;
	8	double theta;
	9	double zeta2;
	10	double zetan;
925fee33	11	double pareto_pow;
e25839d4 JA	12	struct frand_state rand;
	13	};
	14
	15	void zipf_init(struct zipf_state *zs, unsigned long nranges, double theta);
	16	unsigned long long zipf_next(struct zipf_state *zs);
	17
925fee33 JA	18	void pareto_init(struct zipf_state *zs, unsigned long nranges, double h);
	19	unsigned long long pareto_next(struct zipf_state *zs);
	20
e25839d4	21	#endif