projects / fio.git / blame
| Commit | Line | Data |
|---|---|---|
| e25839d4 JA |
1 | #ifndef FIO_ZIPF_H |
| 2 | #define FIO_ZIPF_H | |
| 3 | ||
| b83da9b5 | 4 | #include <inttypes.h> |
| e25839d4 JA |
5 | #include "rand.h" |
| 6 | ||
| 7 | struct zipf_state { | |
| 8 | uint64_t nranges; | |
| 9 | double theta; | |
| 10 | double zeta2; | |
| 11 | double zetan; | |
| 925fee33 | 12 | double pareto_pow; |
| e25839d4 | 13 | struct frand_state rand; |
| a5a4fdfd | 14 | uint64_t rand_off; |
| 8348daf9 | 15 | bool disable_hash; |
| e25839d4 JA |
16 | }; |
| 17 | ||
| 2316296a | 18 | void zipf_init(struct zipf_state *zs, unsigned long nranges, double theta, unsigned int seed); |
| e25839d4 JA |
19 | unsigned long long zipf_next(struct zipf_state *zs); |
| 20 | ||
| 2316296a | 21 | void pareto_init(struct zipf_state *zs, unsigned long nranges, double h, unsigned int seed); |
| 925fee33 | 22 | unsigned long long pareto_next(struct zipf_state *zs); |
| 8348daf9 | 23 | void zipf_disable_hash(struct zipf_state *zs); |
| 925fee33 | 24 | |
| e25839d4 | 25 | #endif |