Mathematics.cs

namespace Mathematics.Code
{
    public class Number
    {
        public static double Power(double x, double y)
        {
            var result = 1.0;
            var p = (int)y;
            while (p != 0)
            {
                if ((p & 1) == 1)
                {
                    result *= x;
                }

                p /= 2;
                x *= x;
            }

            return y < 0 ? 1 / result : result;
        }
    }
}