diff -r ff8a017096d2 -r 4252bfc396fc emul/mini/src/main/java/java/lang/Math.java
--- a/emul/mini/src/main/java/java/lang/Math.java	Fri Feb 01 16:00:27 2013 +0100
+++ b/emul/mini/src/main/java/java/lang/Math.java	Tue Feb 26 14:55:55 2013 +0100
@@ -643,9 +643,8 @@
      * @see     java.lang.Integer#MAX_VALUE
      * @see     java.lang.Integer#MIN_VALUE
      */
-    @JavaScriptBody(args="a", body="return Math.round(a);")
     public static int round(float a) {
-        throw new UnsupportedOperationException();
+        return (int)roundDbl(a);
     }
 
     /**
@@ -668,10 +667,12 @@
      * @see     java.lang.Long#MAX_VALUE
      * @see     java.lang.Long#MIN_VALUE
      */
+    public static long round(double a) {
+        return (long)roundDbl(a);
+    }
+    
     @JavaScriptBody(args="a", body="return Math.round(a);")
-    public static long round(double a) {
-        throw new UnsupportedOperationException();
-    }
+    private static native double roundDbl(double d);
 
 //    private static Random randomNumberGenerator;
 //