You can search for identifiers within the package.
in-package search v0.2.0
type int
type float
val int_of_string : string -> int
val int_to_string : int -> string
val float_of_string : string -> float
val float_to_string : float -> string
val int_of_float : float -> int
val float_of_int : int -> float
val int_of_boolean : bool -> int
val int_to_boolean : int -> bool
val float_of_boolean : bool -> float
val float_to_boolean : float -> bool