vdata_id

IN:

Vdata identifier returned by VSattach

	Purpose	Returns the total number of fields in a vdata.
	Return value	Returns the total number of fields if successful and FAIL (or -1) otherwise.
	Description	VFnfields returns the total number of fields in the vdata identified by the parameter vdata_id.

	FORTRAN	integer function vfnflds(vdata_id)
		integer vdata_id