code: def _pylong_join(
      count, digits_ptr="digits", join_type="unsigned long"
  ):
      """
      Generate an or-ed series of shifts for the first 'count' digits.
      Assumes that they fit into 'join_type'.
  
      (d[2] << 2*n) | (d[1] << 1*n) | d[0]
      """
  
      def shift(n):
          # avoid compiler warnings for overly large shifts that will be discarded anyway
          return (
              " << (%d * PyLong_SHIFT < 8 * sizeof(%s) ? %d * PyLong_SHIFT : 0)"
              % (n, join_type, n)
              if n
              else ""
          )
  
      return "(%s)" % " | ".join(
          "(((%s)%s[%d])%s)" % (join_type, digits_ptr, i, shift(i))
          for i in range(count - 1, -1, -1)
      )
  
label_desc: Use image node_id 2 for calling a global function with example usage: _pylong_join(count, digits_ptr, join_type) and returns: unknown, unknown