val to_string : int -> string
include Comparisons with type t := int
val compare : int -> int -> int
val equal : int -> int -> bool
val (=) : int -> int -> bool
val (<) : int -> int -> bool
val (>) : int -> int -> bool
val (<>) : int -> int -> bool
val (<=) : int -> int -> bool
val (>=) : int -> int -> bool
val min : int -> int -> int
val max : int -> int -> int