Hide Math function implementations in a closure.

src/typedarray.js

Index: src/typedarray.js
diff --git a/src/typedarray.js b/src/typedarray.js
index 4420bce4bc8dd8a2acc5740095e5f8e9d7ef323b..caa428cc91cb8b454015eea32180721521a4306e 100644
--- a/src/typedarray.js
+++ b/src/typedarray.js
@@ -162,16 +162,16 @@ function NAMESubArray(begin, end) {
 
   var srcLength = %_TypedArrayGetLength(this);
   if (beginInt < 0) {
-    beginInt = MathMax(0, srcLength + beginInt);
+    beginInt = $max(0, srcLength + beginInt);
   } else {
-    beginInt = MathMin(srcLength, beginInt);
+    beginInt = $min(srcLength, beginInt);
   }
 
   var endInt = IS_UNDEFINED(end) ? srcLength : end;
   if (endInt < 0) {
-    endInt = MathMax(0, srcLength + endInt);
+    endInt = $max(0, srcLength + endInt);
   } else {
-    endInt = MathMin(endInt, srcLength);
+    endInt = $min(endInt, srcLength);
   }
   if (endInt < beginInt) {
     endInt = beginInt;