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(* $Id$ *)
(*s Files and load path. *)
val add_path : string -> unit
val del_path : string -> unit
val find_file_in_path : string -> string
(*s Generic input and output functions, parameterized by a magic number
and a suffix. The intern functions raise the exception [Bad_magic_number]
when the check fails, with the full file name. *)
exception Bad_magic_number of string
val raw_extern_intern : int -> string ->
(string -> string * out_channel) * (string -> string * in_channel)
val extern_intern : int -> string -> (string -> 'a -> unit) * (string -> 'a)
(*s Time stamps. *)
type time_stamp
val get_time_stamp : unit -> time_stamp
val compare_time_stamps : time_stamp -> time_stamp -> int
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