diff -r 000000000000 -r 6474c204b198 js/src/jit-test/tests/basic/testNativeLog.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/js/src/jit-test/tests/basic/testNativeLog.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,8 @@
+function testNativeLog() {
+  var a = new Array(5);
+  for (var i = 0; i < 5; i++) {
+    a[i] = Math.log(Math.pow(Math.E, 10));
+  }
+  return a.join(",");
+}
+assertEq(testNativeLog(), "10,10,10,10,10");