--- jsr166/src/jsr166e/DoubleAdder.java	2013/01/07 07:14:01	1.8
+++ jsr166/src/jsr166e/DoubleAdder.java	2014/05/04 22:38:19	1.11
@@ -59,15 +59,15 @@ public class DoubleAdder extends Striped
      * @param x the value to add
      */
     public void add(double x) {
-        Cell[] as; long b, v; HashCode hc; Cell a; int n;
+        Cell[] as; long b, v; int[] hc; Cell a; int n;
         if ((as = cells) != null ||
             !casBase(b = base,
                      Double.doubleToRawLongBits
                      (Double.longBitsToDouble(b) + x))) {
             boolean uncontended = true;
-            int h = (hc = threadHashCode.get()).code;
-            if (as == null || (n = as.length) < 1 ||
-                (a = as[(n - 1) & h]) == null ||
+            if ((hc = threadHashCode.get()) == null ||
+                as == null || (n = as.length) < 1 ||
+                (a = as[(n - 1) & hc[0]]) == null ||
                 !(uncontended = a.cas(v = a.value,
                                       Double.doubleToRawLongBits
                                       (Double.longBitsToDouble(v) + x))))
@@ -77,10 +77,10 @@ public class DoubleAdder extends Striped
 
     /**
      * Returns the current sum.  The returned value is <em>NOT</em> an
-     * atomic snapshot: invocation in the absence of concurrent
+     * atomic snapshot; invocation in the absence of concurrent
      * updates returns an accurate result, but concurrent updates that
      * occur while the sum is being calculated might not be
-     * incorporated.  Also, because double-precision arithmetic is not
+     * incorporated.  Also, because floating-point arithmetic is not
      * strictly associative, the returned result need not be identical
      * to the value that would be obtained in a sequential series of
      * updates to a single variable.