[fio.git] / lib / gauss.h

#ifndef FIO_GAUSS_H
#define FIO_GAUSS_H

#include <inttypes.h>
#include "rand.h"

struct gauss_state {
	struct frand_state r;
	uint64_t nranges;
	unsigned int stddev;
	unsigned int rand_off;
	bool disable_hash;
};

void gauss_init(struct gauss_state *gs, unsigned long nranges, double dev,
		double center, unsigned int seed);
unsigned long long gauss_next(struct gauss_state *gs);
void gauss_disable_hash(struct gauss_state *gs);

#endif
Commit	Line	Data
56d9fa4b JA	1	#ifndef FIO_GAUSS_H
	2	#define FIO_GAUSS_H
	3
	4	#include <inttypes.h>
	5	#include "rand.h"
	6
	7	struct gauss_state {
	8	struct frand_state r;
	9	uint64_t nranges;
	10	unsigned int stddev;
a87c90fd	11	unsigned int rand_off;
8348daf9	12	bool disable_hash;
56d9fa4b JA	13	};
56d9fa4b JA	14
f88cd222	15	void gauss_init(struct gauss_state *gs, unsigned long nranges, double dev,
a87c90fd	16	double center, unsigned int seed);
56d9fa4b	17	unsigned long long gauss_next(struct gauss_state *gs);
8348daf9	18	void gauss_disable_hash(struct gauss_state *gs);
56d9fa4b JA	19
56d9fa4b JA	20	#endif