Module State

The functions from module State manipulate the current state of the random generator explicitely. This allows using one or several deterministic PRNGs, even in a multi-threaded program, without interference from other parts of the program.


type t
val default : t
val make : int array -> t

Create a new state and initialize it with the given seed.

val make_self_init : ?allow_in_tests:bool -> unit -> t

Create a new state and initialize it with a system-dependent low-entropy seed.

val copy : t -> t
val bits : t -> int

These functions are the same as the basic functions, except that they use (and update) the given PRNG state instead of the default one.

val int : t -> int -> int
val int32 : t -> Int32.t -> Int32.t
val nativeint : t -> Nativeint.t -> Nativeint.t
val int64 : t -> Int64.t -> Int64.t
val float : t -> float -> float
val bool : t -> bool