* It must either be 2, 8, 10, or 16.
* @param[out] ret The result of the operation
* @exception E_SUCCESS The method is successful.
* @exception E_NUM_FORMAT The specified string does not contain a number that can be parsed.
* @exception E_OUT_OF_RANGE The specified @c radix is invalid.
* It must either be 2, 8, 10, or 16.
* @param[out] ret The result of the operation
* @exception E_SUCCESS The method is successful.
* @exception E_NUM_FORMAT The specified string does not contain a number that can be parsed.
* @exception E_OUT_OF_RANGE The specified @c radix is invalid.