From: Tyson Smith <[email protected]>
---
random.c | 12 +++---------
1 file changed, 3 insertions(+), 9 deletions(-)
diff --git a/random.c b/random.c
index 7917f78..8b4f715 100644
--- a/random.c
+++ b/random.c
@@ -171,15 +171,9 @@ u64 rand64(void)
if (ONE_IN(25))
r = ~r;
- /* increase distribution in MSB */
- if (ONE_IN(10)) {
- unsigned int i;
- unsigned int rounds;
-
- rounds = rand() % 4;
- for (i = 0; i < rounds; i++)
- r |= (1UL << ((__WORDSIZE - 1) - (rand() % 8)));
- }
+ /* Set ~2 bits in MSB to increase distribution */
+ if (ONE_IN(10))
+ r |= (rand() & rand() & 0xffULL) << 56;
/* Sometimes flip sign */
if (ONE_IN(25))
--
1.9.1
--
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