Improve performance of Math.sqrt()
Compare the test run count for Math.sqrt of IE11 vs Chrome at http://jsperf.com/math-sqrt-vs-newton-raphson-method.
However, IE11 beats both Chrome and FF in Newton Raphson method test (root).
In your linked micro-benchmark, the native Math.sqrt is a lot faster than your implementation. Tested it using Win10 1511 (Build 10586.3).
So this seems to be fixed. Please remove your suggestion.