From: Szabolcs Nagy <nsz@port70.net>
Date: Sat, 8 Jun 2013 13:49:12 +0000 (+0000)
Subject: prng: make rand_r have 2^32 period instead of 2^31
X-Git-Url: http://nsz.repo.hu/git/?p=musl;a=commitdiff_plain;h=0996faa3d789dd69e4c1c022757f0623908b0df5;ds=sidebyside

prng: make rand_r have 2^32 period instead of 2^31

this is a minor fix to increase the period of the obsolete rand_r a bit.
an include header in __rand48_step.c is fixed as well.
---

diff --git a/src/prng/__rand48_step.c b/src/prng/__rand48_step.c
index 755b4f2f..105f810f 100644
--- a/src/prng/__rand48_step.c
+++ b/src/prng/__rand48_step.c
@@ -1,5 +1,5 @@
 #include <stdlib.h>
-#include <inttypes.h>
+#include <stdint.h>
 
 uint64_t __rand48_step(unsigned short *xi, unsigned short *lc)
 {
diff --git a/src/prng/rand_r.c b/src/prng/rand_r.c
index e96cfba9..ef26dbde 100644
--- a/src/prng/rand_r.c
+++ b/src/prng/rand_r.c
@@ -2,5 +2,5 @@
 
 int rand_r(unsigned *seed)
 {
-	return (*seed = *seed * 1103515245 + 12345) & 0x7fffffff;
+	return (*seed = *seed * 1103515245 + 12345)/2;
 }