Merge branch 'fio-docs-ci' of https://github.com/vincentkfu/fio

[fio.git] / lib / rand.h

diff --git a/lib/rand.h b/lib/rand.h
index 46c1c5e023a132513ded05d885bd5769dbf7ceb9..2b4be78893a926d22a37006706a1caf4b0d3e431 100644 (file)
--- a/lib/rand.h
+++ b/lib/rand.h
@@ -150,8 +150,19 @@ static inline uint64_t rand_between(struct frand_state *state, uint64_t start,
                return start + rand32_upto(state, end - start);
 }
 
+static inline uint64_t __get_next_seed(struct frand_state *fs)
+{
+       uint64_t r = __rand(fs);
+
+       if (sizeof(int) != sizeof(long *))
+               r *= (unsigned long) __rand(fs);
+
+       return r;
+}
+
 extern void init_rand(struct frand_state *, bool);
 extern void init_rand_seed(struct frand_state *, uint64_t seed, bool);
+void __init_rand64(struct taus258_state *state, uint64_t seed);
 extern void __fill_random_buf(void *buf, unsigned int len, uint64_t seed);
 extern uint64_t fill_random_buf(struct frand_state *, void *buf, unsigned int len);
 extern void __fill_random_buf_percentage(uint64_t, void *, unsigned int, unsigned int, unsigned int, char *, unsigned int);