1 files changed, 15 insertions, 1 deletions
diff --git a/core/bitArray.js b/core/bitArray.js
index a6d0617..54112ac 100644
--- a/core/bitArray.js
+++ b/core/bitArray.js
@@ -74,7 +74,7 @@ sjcl.bitArray = {
       return a1.concat(a2);
     }
     
-    var out, i, last = a1[a1.length-1], shift = sjcl.bitArray.getPartial(last);
+    var last = a1[a1.length-1], shift = sjcl.bitArray.getPartial(last);
     if (shift === 32) {
       return a1.concat(a2);
     } else {
@@ -183,5 +183,19 @@ sjcl.bitArray = {
    */
   _xor4: function(x,y) {
     return [x[0]^y[0],x[1]^y[1],x[2]^y[2],x[3]^y[3]];
+  },
+
+  /** byteswap a word array inplace.
+   * (does not handle partial words)
+   * @param {sjcl.bitArray} a word array
+   * @return {sjcl.bitArray} byteswapped array
+   */
+  byteswapM: function(a) {
+    var i, v, m = 0xff00;
+    for (i = 0; i < a.length; ++i) {
+      v = a[i];
+      a[i] = (v >>> 24) | ((v >>> 8) & m) | ((v & m) << 8) | (v << 24);
+    }
+    return a;
   }
 };