# class Random::PCG32

- Random::PCG32
- Reference
- Object

##
Overview

pcg32_random_r: - result: 32-bit unsigned int (uint32_t) - period: 2^64 (* 2^63 streams) - state type: pcg32_random_t (16 bytes) - output func: XSH-RR

##
Included Modules

- Random

##
Defined in:

random/pcg32.cr

##
Constant Summary

PCG_DEFAULT_MULTIPLIER_64 = `6364136223846793005_u64`

##
Constructors

- .new(initstate : UInt64, initseq = 0_u64)
- .new

##
Instance Method Summary

- #jump(delta)
- #new_seed(initstate : UInt64, initseq = 0_u64) : UInt32
- #new_seed : UInt32

  Reseed the generator.

- #next_u : UInt32

  Generates a random unsigned integer.

- #split_internal(other : self) : Nil

  The internal implementation for `#split` where self is the original instance and other the duplicated instance to be returned.

### Instance methods inherited from module `Random`

base64(n : Int = 16) : String base64, hex(n : Int = 16) : String hex, new_seed new_seed, next_bool : Bool next_bool, next_float : Float64 next_float, next_int : Int32 next_int, next_u next_u, rand(max : Int) : Int
rand(max : Float64) : Float64
rand(max : Float32) : Float32
rand(range : Range(Int, Int)) : Int
rand(range : Range(Float, Float)) : Float
rand(type : StaticArray(Int8, _).class)
rand(type : StaticArray(UInt8, _).class)
rand(type : StaticArray(Int16, _).class)
rand(type : StaticArray(UInt16, _).class)
rand(type : StaticArray(Int32, _).class)
rand(type : StaticArray(UInt32, _).class)
rand(type : StaticArray(Int64, _).class)
rand(type : StaticArray(UInt64, _).class)
rand(type : StaticArray(Int128, _).class)
rand(type : StaticArray(UInt128, _).class)
rand(type : Int8.class) : Int8
rand(type : UInt8.class) : UInt8
rand(type : Int16.class) : Int16
rand(type : UInt16.class) : UInt16
rand(type : Int32.class) : Int32
rand(type : UInt32.class) : UInt32
rand(type : Int64.class) : Int64
rand(type : UInt64.class) : UInt64
rand(type : Int128.class) : Int128
rand(type : UInt128.class) : UInt128
rand : Float64 rand, random_bytes(n : Int = 16) : Bytes
random_bytes(buf : Bytes) : Nil random_bytes, split : self split, split_internal(other : self) : Nil split_internal, urlsafe_base64(n : Int = 16, padding = false) : String urlsafe_base64

### Constructor methods inherited from module `Random`

new(seed, sequence = 0_u64)
new new, split : Random split

### Class methods inherited from module `Random`

next_bool : Bool next_bool, next_int : Int32 next_int, rand(x)
rand : Float64 rand

### Instance methods inherited from class `Reference`

==(other : self)
==(other : JSON::Any)
==(other : YAML::Any)
==(other) ==, dup dup, hash(hasher) hash, initialize initialize, inspect(io : IO) : Nil inspect, object_id : UInt64 object_id, pretty_print(pp) : Nil pretty_print, same?(other : Reference) : Bool
same?(other : Nil) same?, to_s(io : IO) : Nil to_s

### Constructor methods inherited from class `Reference`

new new, unsafe_construct(address : Pointer, *args, **opts) : self unsafe_construct

### Class methods inherited from class `Reference`

pre_initialize(address : Pointer) pre_initialize

### Instance methods inherited from class `Object`

! : Bool !, !=(other) !=, !~(other) !~, ==(other) ==, ===(other : JSON::Any)
===(other : YAML::Any)
===(other) ===, =~(other) =~, as(type : Class) as, as?(type : Class) as?, class class, dup dup, hash(hasher)
hash hash, in?(collection : Object) : Bool
in?(*values : Object) : Bool in?, inspect(io : IO) : Nil
inspect : String inspect, is_a?(type : Class) : Bool is_a?, itself itself, nil? : Bool nil?, not_nil!(message)
not_nil! not_nil!, pretty_inspect(width = 79, newline = "\n", indent = 0) : String pretty_inspect, pretty_print(pp : PrettyPrint) : Nil pretty_print, responds_to?(name : Symbol) : Bool responds_to?, tap(&) tap, to_json(io : IO) : Nil
to_json : String to_json, to_pretty_json(indent : String = " ") : String
to_pretty_json(io : IO, indent : String = " ") : Nil to_pretty_json, to_s(io : IO) : Nil
to_s : String to_s, to_yaml(io : IO) : Nil
to_yaml : String to_yaml, try(&) try, unsafe_as(type : T.class) forall T unsafe_as

### Class methods inherited from class `Object`

from_json(string_or_io : String | IO, root : String)
from_json(string_or_io : String | IO) from_json, from_yaml(string_or_io : String | IO) from_yaml

### Macros inherited from class `Object`

class_getter(*names, &block) class_getter, class_getter!(*names) class_getter!, class_getter?(*names, &block) class_getter?, class_property(*names, &block) class_property, class_property!(*names) class_property!, class_property?(*names, &block) class_property?, class_setter(*names) class_setter, def_clone def_clone, def_equals(*fields) def_equals, def_equals_and_hash(*fields) def_equals_and_hash, def_hash(*fields) def_hash, delegate(*methods, to object) delegate, forward_missing_to(delegate) forward_missing_to, getter(*names, &block) getter, getter!(*names) getter!, getter?(*names, &block) getter?, property(*names, &block) property, property!(*names) property!, property?(*names, &block) property?, setter(*names) setter

##
Constructor Detail

def self.new(initstate : UInt64, initseq = 0_u64) #
def self.new #

##
Instance Method Detail

def jump(delta) #
def new_seed(initstate : UInt64, initseq = 0_u64) : UInt32 #
def new_seed : UInt32 #
Description copied from module Random

Reseed the generator.

def next_u : UInt32 #
Description copied from module Random

Generates a random unsigned integer.

The integers must be uniformly distributed between `0` and the maximal value for the chosen type.

def split_internal(other : self) : Nil #
Description copied from module Random

The internal implementation for `#split` where self is the original instance and other the duplicated instance to be returned.

The default `Random` implementation in stdlib is splittable, but not every PRNG algorithm is splittable, so the method raises a `NotImplementedError` exception by default.