status.i4.v = dio_gas_module_type_c(device_indices.i4a.r,
					    gas_types.i4a.r, gas_slots.i4a.r,
					    errors.i2a.r, num_devices.i4.v)

	This routine returns the GAS module type and slot for a device and
	property (DI/PI).

	device_indices	device index or array of device indices
	properties	property index or array of indices
			(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.)
			(constants are in dbprops)
	gas_types	returned GAS type or array of types
			(A value of NULL may be passed if no GAS types
			 are needed.)
	gas_slots	returned GAS slot or array of slots (0-6)
			(A value of NULL may be passed if no GAS slots
			 are needed.)
	errors		returned ACNET status value or array of status values
			(DIO_INVDEV -> not a GAS device)
	num_devices	number of devices

	This function returns status values as follows:

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

	This function requires the following include files:

	dbprops_h, ul_cbsaux_h:auxlib_device_h, acnet_errors_h

	Related functions:

	dio_gas_module_devices_c, fe_get_gas_house_list_c, dio_dev_type,

	C/C++ usage:

	short	properties[NUM_DEVICES] = {PRREAD, PRREAD};
	short	errors[NUM_DEVICES];
	int	status;
	static const int	device_indices[NUM_DEVICES] = {9524, 9525};
	int	gas_types[NUM_DEVICES];
	int	gas_slots[NUM_DEVICES];
	int	num_devices = NUM_DEVICES;

	status = dio_gas_module_type_c(device_indices,properties,