status.i4.v = pdb_valid_length_c(primary_index.i4.v, length.i4.v)

	This function is called to determine if the passed data length is
	valid for the associated primary transform.

	primary_index	primary transform index
	length		data length (in bytes)

	This function returns status values as follows:

	TRUE			length is valid for primary transform
	FALSE			legnth is not valid for primary transform

	This function requires the following include files:

	cnsparam_h, clib_h

	Related functions:

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

	C/C++ usage:

	int	status;
	int	primary_index = 0;
	int	length = 2;

	status = pdb_valid_length_c(primary_index,length);