Commit | Line | Data |
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8055e41d JA |
1 | #ifndef FIO_LFSR_H |
2 | #define FIO_LFSR_H | |
3 | ||
4 | #include <inttypes.h> | |
5 | ||
6 | #define FIO_MAX_TAPS 8 | |
7 | ||
8 | struct lfsr_taps { | |
9 | unsigned int length; | |
10 | unsigned int taps[FIO_MAX_TAPS]; | |
11 | }; | |
12 | ||
13 | ||
14 | struct fio_lfsr { | |
15 | uint64_t last_val; | |
16 | uint64_t max_val; | |
17 | uint64_t num_vals; | |
18 | struct lfsr_taps taps; | |
19 | }; | |
20 | ||
21 | int lfsr_next(struct fio_lfsr *fl, uint64_t *off); | |
22 | int lfsr_init(struct fio_lfsr *fl, uint64_t size); | |
23 | ||
24 | #endif |