| #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 |