[linux-2.6-block.git] / tools / perf / util / stat.h

#ifndef __PERF_STATS_H
#define __PERF_STATS_H

#include "types.h"

struct stats
{
	double n, mean, M2;
};

void update_stats(struct stats *stats, u64 val);
double avg_stats(struct stats *stats);
double stddev_stats(struct stats *stats);
double rel_stddev_stats(double stddev, double avg);

#endif
Commit	Line	Data
0007ecea XG	1	#ifndef __PERF_STATS_H
	2	#define __PERF_STATS_H
	3
	4	#include "types.h"
	5
	6	struct stats
	7	{
	8	double n, mean, M2;
	9	};
	10
	11	void update_stats(struct stats *stats, u64 val);
	12	double avg_stats(struct stats *stats);
	13	double stddev_stats(struct stats *stats);
	14	double rel_stddev_stats(double stddev, double avg);
	15
	16	#endif