public String getErrorCode()
	{
		if( !getIsErr() )
		{
			return String.valueOf( iserr );
		}
		String retval = "";
		if( (errorval & 0x0) == 0x0 )
		{
			retval = "#NULL!";
		}
		if( (errorval & 0x7) == 0x7 )
		{
			retval = "#DIV/0!";
		}
		if( (errorval & 0xF) == 0xF )
		{
			retval = "#VALUE!";
		}
		if( (errorval & 0x17) == 0x17 )
		{
			retval = "#REF!";
		}
		if( (errorval & 0x1D) == 0x1D )
		{
			retval = "#NAME?";
		}
		if( (errorval & 0x24) == 0x24 )
		{
			retval = "#NUM!";
		}
		if( (errorval & 0x2A) == 0x2A )
		{
			retval = "#N/A";
		}
		return retval;
	}