| 1 | #ifndef FIO_ZIPF_H |
| 2 | #define FIO_ZIPF_H |
| 3 | |
| 4 | #include <inttypes.h> |
| 5 | #include "rand.h" |
| 6 | |
| 7 | struct zipf_state { |
| 8 | uint64_t nranges; |
| 9 | double theta; |
| 10 | double zeta2; |
| 11 | double zetan; |
| 12 | double pareto_pow; |
| 13 | struct frand_state rand; |
| 14 | uint64_t rand_off; |
| 15 | }; |
| 16 | |
| 17 | void zipf_init(struct zipf_state *zs, unsigned long nranges, double theta, unsigned int seed); |
| 18 | unsigned long long zipf_next(struct zipf_state *zs); |
| 19 | |
| 20 | void pareto_init(struct zipf_state *zs, unsigned long nranges, double h, unsigned int seed); |
| 21 | unsigned long long pareto_next(struct zipf_state *zs); |
| 22 | |
| 23 | #endif |