dio_has_enum_value_info_c

	status.i4.v = dio_has_enum_value_info_c(device_indices.i4a.r,
						properties.i2a.r,
						has_enum_values.i4a.r,
						errors.i2a.r
						[,num_devices.i4.v])

	This routine determines if reading/setting enumerated value
	information exists for a device.

	device_indices	device index or array of device indices
	properties	property index or array of property indices
			(PRREAD -> reading property,
			 PRSET -> setting property)
			(If the first value is less than zero, all devices
			 will be requested with a property index which is
			 equal to the absolute value of this argument.)
	has_enum_values	returned flag(s) indicating whether or not
			the corresponding property has enumerated value
			information
			(TRUE -> has enumerated value information,
			 FALSE -> doesn't have enumerated value information)
	errors		returned ACNET status value or array of status values
	[num_devices]	number of devices (default is 1)

	This function returns status values as follows:

	OK			success
	DIO_BADARG		invalid number of devices passed
	DIO_MEMFAIL		memory allocation failure
	negative value		ACNET format error indicating overall failure
	positive value		number of devices in error indicating partial
				success

	This function requires the following include files:

	cnsparam_h, diolib_h, cns_data_structs_h, acnet_errors_h

	Related functions:

	dio_enum_value_info_c, dio_is_enum_value_info_shared_c,
	dio_enum_value_shared_devices_c, dio_get_pdb, dio_scaling,
	dio_get_dev(_c), dio_get_lst, dio_set_dev(_c),
	dio_set_lst, dio_raw_to_enum_value_text_c,
	dio_enum_value_text_to_raw_data_c, error_in_list(_c)

	C/C++ usage:

	static const short	properties[NUM_DEVICES] = {PRREAD, PRREAD};
	short	errors[NUM_DEVICES];
	int	status;
	static const int	device_indices[NUM_DEVICES] = {14430, 14431};
	int	has_enum_values[NUM_DEVICES];
	int	num_devices = NUM_DEVICES;

	status = dio_has_enum_value_info_c(device_indices,properties,
					   has_enum_values,errors,num_devices);