status.i4.v = dio_scaling_constants_c(device_indices.i4a.r,
					      errors.i2a.r, num_devices.i4.v)

	This routine returns reading and/or setting scaling transform indices
	for a device or list of devices.

	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
			 use a property index which is equal to the absolute
			 value of this argument.)
	num_constants	returned number of constants or array of number of
			(If this value is not needed, a value of NULL
			can be passed for this argument.)
	constants	returned scaling constants
			(If constants are not needed, a value of NULL
			can be passed for this argument.)
	errors		returned ACNET status value or array of returned
			status values (A status of DBM_NOREC indicates that
			the requested PDB does not exist.)
	num_devices	number of devices in list

	This function returns status values as follows:

	OK			success
	DIO_BADARG		invalid property index passed
	DIO_MEMFAIL		memory allocation failure
	negative value		other ACNET format error
	positive value		number of devices in error

	This function requires the following include files:

	dbprops_h, diolib_h, acnet_errors_h

	Related functions:

	dio_scaling_transforms_c, dio_scaling, dio_is_display_dec(_c),
	dio_is_display_short(_c), dio_scaling_len(_c),
	dio_scaling_length_list_c, dio_units_text_c,
	dio_manage_extended_pdbs_c, dio_get_pdb, dio_pdb_sts, dio_pdb_ctl,
	dio_is_string_property_c, dio_is_enumerated_property_c,
	dio_is_primary_scalable_property_c, dio_data_type_info_c,

	C/C++ usage:

	short	errors[NUM_DEVICES];
	short	properties = -PRSET;
	int	status;
	static const int	device_indices[NUM_DEVICES] = {14430, 14431};
	int	num_constants[NUM_DEVICES];
	int	num_devices = NUM_DEVICES;

	status = dio_scaling_constants_c(device_indices,&properties,
					 num_constants,(double *) constants,