/** >Mathematical
		Test given string to determine whether it is a numeric string
	Parameters:
		lpcstr = the alpha numeric string to test
		bThousoudSeparatorOK = to decide if thousand's separator can be used, like 1,234,567
		bLeadZeroOK = to decide if 01060 is a number (TRUE) or it should be considered not a number (bLeadZeroOK=FALSE)
	Return: 
		TRUE if given string is numeric, otherwise FALSE.
	Example:
		double	convert_str_to_num(string str)
		{			
			if (is_numeric(str))
				return atof(str);
			else
				return NANUM;
		}
	
*/
BOOL is_numeric(LPCSTR lpcstr, BOOL bThousoudSeparatorOK = TRUE, BOOL bLeadZeroOK = TRUE);