MGame.GetIntSQRT C# (CSharp) Method

    public static int GetIntSQRT(int num)
    {
        if (0 == num) { return 0; }  // Avoid zero divide
        int n = (num / 2) + 1;       // Initial estimate, never low
        int n1 = (n + (num / n)) / 2;
        while (n1 < n) {
            n = n1;
            n1 = (n + (num / n)) / 2;
        } // end while
        return n;
    }