Mine

         /// <summary>
        /// Force an unigned integer to be a power of 2.
        /// Finds the next highest power of 2, starting at 2
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        private uint ForcePowerOf2(uint value)
        {
            //Force a minimum of 2
            uint powerof2 = (value < 2) ? 2 : value;

            //If the value is not a power of 2, find the next highest.
            if (((powerof2 & (powerof2 - 1)) != 0))
            {
                //find the next number of powers
                powerof2 = (uint)((Math.Log(powerof2) / Math.Log(2)) + 1);

                //raise 2 to the number of powers
                powerof2 = (uint)Math.Pow(2.0, (Double)powerof2);
            }

            //return the new powerof 2
            return powerof2;
        }