--- jsr166/src/main/java/util/SplittableRandom.java	2016/11/17 22:09:52	1.37
+++ jsr166/src/main/java/util/SplittableRandom.java	2016/12/20 22:08:05	1.38
@@ -375,7 +375,7 @@ public final class SplittableRandom {
      * may, and typically does, vary across program invocations.
      */
     public SplittableRandom() { // emulate defaultGen.split()
-        long s = defaultGen.getAndAdd(2 * GOLDEN_GAMMA);
+        long s = defaultGen.getAndAdd(GOLDEN_GAMMA << 1);
         this.seed = mix64(s);
         this.gamma = mixGamma(s + GOLDEN_GAMMA);
     }