status.i4.v = is_numeric_ip_address(string.i1a.r [,ip_address.u4.r])

	This routine determines whether or not an IP address string
	is a numeric address.

	string		null terminated possible numeric IP address string
			to check
	[ip_address]	returned IP address value
			(default is NULL)

	This function returns ACNET status values as follows:

	TRUE			string is a valid numeric IP address string
	FALSE			string is not a valid numeric IP address string

	This function requires the following include files:

	cbslib_h, cnsparam_h

	Related functions:

	numeric_to_ascii(_c), ascii_to_numeric(_c), acnet_node_ip_address_c,
	ip_address_to_acnet_node, ip_address_to_matching_acnet_node

	C/C++ usage:

	static const char	string[] = "";
	int	status;
	unsigned int	ip_address;

	status = is_numeric_ip_address(string,&ip_address);