X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/1c79356b52d46aa6b508fb032f5ae709b1f2897b..0c530ab8987f0ae6a1a3d9284f40182b88852816:/bsd/libkern/random.c

diff --git a/bsd/libkern/random.c b/bsd/libkern/random.c
index aed1b355b..8a002af2c 100644
--- a/bsd/libkern/random.c
+++ b/bsd/libkern/random.c
@@ -54,15 +54,8 @@
  *	@(#)random.c	8.1 (Berkeley) 6/10/93
  */
 
-/*
- * Modification History
- *
- * Feb 22, 1999 	Dieter Siegmund (dieter@apple.com)
- * - the first time, set the random seed to the microsecond time value
- *   to make the random numbers less predictable
- */
-#include <libkern/libkern.h>
-#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/random.h>
 
 /*
  * Pseudo-random number generator for randomizing the profiling clock,
@@ -72,32 +65,6 @@
 u_long
 random()
 {
-    	static int first = 1;
-    	static u_long randseed = 1;
-
-	register long x, hi, lo, t;
-
-	if (first) {
-	    struct timeval tv;
-	    microtime(&tv);
-	    randseed = tv.tv_usec;
-	    if(!randseed)
-		randseed=1;
-	    first = 0;
-	}
-
-	/*
-	 * Compute x[n + 1] = (7^5 * x[n]) mod (2^31 - 1).
-	 * From "Random number generators: good ones are hard to find",
-	 * Park and Miller, Communications of the ACM, vol. 31, no. 10,
-	 * October 1988, p. 1195.
-	 */
-	x = randseed;
-	hi = x / 127773;
-	lo = x % 127773;
-	t = 16807 * lo - 2836 * hi;
-	if (t <= 0)
-		t += 0x7fffffff;
-	randseed = t;
-	return (t);
+	return RandomULong();
 }
+