package base

  1. Overview
  2. Docs
package base
Legend:
Page
Library
Module
Module type
Parameter
Class
Class type
Source

Module Random.StateSource

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.

Note that Random.get_state from the standard library is not exposed, because it misleadingly makes a copy of random state, which is not typically the desired outcome for accessing the shared state.

Obtaining multiple generators with good independence properties is nontrivial; see the Splittable_random library for that.

Sourcetype t
Sourceval default : t

This gives access to the default random state, allowing user code to share (and thereby mutate) the random state used by the main functions in Random.

Sourceval make : int array -> t

Creates a new state and initializes it with the given seed.

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

Creates a new state and initializes it with a system-dependent low-entropy seed.

Sourceval copy : t -> t

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

Sourceval bits : t -> int
Sourceval int : t -> int -> int
Sourceval int32 : t -> int32 -> int32
Sourceval nativeint : t -> nativeint -> nativeint
Sourceval int64 : t -> int64 -> int64
Sourceval float : t -> float -> float
Sourceval int_incl : t -> int -> int -> int
Sourceval int32_incl : t -> int32 -> int32 -> int32
Sourceval nativeint_incl : t -> nativeint -> nativeint -> nativeint
Sourceval int64_incl : t -> int64 -> int64 -> int64
Sourceval float_range : t -> float -> float -> float
Sourceval bool : t -> bool
Sourceval char : t -> char
Sourceval ascii : t -> char
OCaml

Innovation. Community. Security.

GitHub Discord Twitter Peertube RSS
About
Changelog Releases Industrial Users Academic Users Why OCaml
Ecosystem
Packages Community Events OCaml Planet Jobs
Resources
Install OCaml Get Started Platform Tools Language Manual Standard Library API Books Exercises Papers OCaml Playground Logo
Policies
Carbon Footprint Governance Privacy Code of Conduct