X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=src%2Fprng%2Frand_r.c;h=638614c867911a133d4a3f054c7150e28d5a4425;hb=0636d5977aa796d78869ee310c6e69220b919eee;hp=e96cfba99cdb9c8cb4b2c0d834389b864e857e23;hpb=0b44a0315b47dd8eced9f3b7f31580cf14bbfc01;p=musl

diff --git a/src/prng/rand_r.c b/src/prng/rand_r.c
index e96cfba9..638614c8 100644
--- a/src/prng/rand_r.c
+++ b/src/prng/rand_r.c
@@ -1,6 +1,15 @@
 #include <stdlib.h>
 
+static unsigned temper(unsigned x)
+{
+	x ^= x>>11;
+	x ^= x<<7 & 0x9D2C5680;
+	x ^= x<<15 & 0xEFC60000;
+	x ^= x>>18;
+	return x;
+}
+
 int rand_r(unsigned *seed)
 {
-	return (*seed = *seed * 1103515245 + 12345) & 0x7fffffff;
+	return temper(*seed = *seed * 1103515245 + 12345)/2;
 }