module type S =sig..end
module type S is the interface for a set of flags. Values of type t are set of
flags, and the various functions operate on sets of flags. There is a finite universe
of flags (in particular 63 flags, one for each bit).
sexp_of_t uses the flag names supplied to Flags.Make
type t
val of_int : int -> tval to_int_exn : t -> intval equal : t -> t -> boolval empty : tval (+) : t -> t -> tval (-) : t -> t -> tval intersect : t -> t -> tval complement : t -> tval do_intersect : t -> t -> boolval are_disjoint : t -> t -> boolval sexp_of_t : t -> Sexplib.Sexp.t