largest power

/**
 * Complete the method to find the largest power of 2 less than the given number
 * Use a loop
 */
public class MathUtil
{
   public int largestPowerOf2(int n)
   {
       double pow = 0;
       while ( Math.pow(2, pow) < n)
       {
          // pow = Math.pow(2.0, pow);
           //pow = pow * 2;
           pow++;
       }

       return (int)pow;
   }
}