Fix for bug #8430 (CEILING returns incorrect result)

longlong Item_func_ceiling::int_op()

{

  /*

    the volatile's for BUG #3051 to calm optimizer down (because of gcc's

    bug)

  */

  volatile double value= args[0]->val_real();

  longlong result;

  switch (args[0]->result_type()) {

  case INT_RESULT:

    result= args[0]->val_int();

    null_value= args[0]->null_value;

  return (longlong) ceil(value);

    break;

  case DECIMAL_RESULT:

  {

    my_decimal dec_buf, *dec;

    if ((dec= decimal_op(&dec_buf)))

      my_decimal2int(E_DEC_FATAL_ERROR, dec, unsigned_flag, &result);

    else

      result= 0;

    break;

  }

  default:

    result= (longlong)real_op();

  };

  return result;

}