From: Pavel Charvat <pchar@ucw.cz>
Date: Tue, 1 Oct 2024 08:19:39 +0000 (+0000)
Subject: Random: Fixed bug in xoroshiro128 implementation.
X-Git-Url: http://mj.ucw.cz/gitweb/?a=commitdiff_plain;h=88fe8b52158156367d43decbdeb1454cc6700dd7;p=libucw.git

Random: Fixed bug in xoroshiro128 implementation.
---

diff --git a/ucw/random-fast.c b/ucw/random-fast.c
index 7ba31814..32b3a260 100644
--- a/ucw/random-fast.c
+++ b/ucw/random-fast.c
@@ -213,6 +213,7 @@ static inline u64 fastrand_one(struct fastrand *c)
 #else
 #  error "Unsupported xoroshiro parameters"
 #endif
+  s1 ^= s0;
   s[0] = fastrand_rol64(s0, ra) ^ s1 ^ (s1 << rb);
   s[1] = fastrand_rol64(s1, rc);