package base

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

Obtaining multiple generators with good independence properties is nontrivial; see Splittable_random.

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 -> int32
val nativeint : t -> nativeint -> nativeint
val int64 : t -> int64 -> int64
val float : t -> float -> float
val bool : t -> bool
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