高效转换：四字节二进制数组转浮点数

        /// <summary>
        /// 获取一个float值
        /// </summary>
        /// <param name="bytFloat">4个字节的数组</param>
        /// <param name="Return10">返回值</param>
        /// <returns></returns>
        private bool MBfloatto10(byte[] bytFloat, out  float Return10)//四个字节 float->10
        {
            if (bytFloat.Length != 4)
            {
                Return10 = 0;
                return false;
            }
            string retValue = "";
            int S = 0;// 
            int E = 0;
            Int32 M = 0;
            try
            {
                for (int i = 0; i < bytFloat.Length; i++) //转化为32字符串
                {
                    retValue += Convert.ToString(bytFloat[i], 2).PadLeft(8, '0');
                }
                if (retValue.Length != 32)
                {
                    Return10 = 0;
                    return false;
                }
                S = Convert.ToInt16(retValue.Substring(0, 1));
                E = Convert.ToInt16(retValue.Substring(1, 8), 2);