num_constants.i4.v = common_transform_num_const_c(common_index.i4.v)

	This function is called to return the required number of constants
	for the common transform specified.

	common_index	common transform index

	This function returns status values as follows:

	DIO_BADARG		invalid common_index passed
	otherwise		number of constants in transform

	This function requires the following include files:

	clib_h, acnet_errors_h

	Related functions:

	pdudpu, pdudpu_ext, pdudcu, pdudcu_ext, pdpucu, pdpucu_ext,
	pdpucu8, pdcupu, pdcupu_ext, pdcupu8, pdcuud, pdcuud8, pcpuud,
	pdimax, pdulen, pdb_valid_length_c, pdb_scaling_table_limits_c,
	is_string_common_transform_c, is_linear_common_transform_c,

	C/C++ usage:

	int	num_constants;
	int	common_index = 20;

	num_constants = common_transform_num_const_c(common_index);