MT

A Mersenne Twister. This is a non-cryptographic random number generator. This should only be used for legacy applications that require a Mersenne Twister, otherwise use Rand.

class ref MT is
  Random ref

Implements


Constructors

create

Create with the specified seed. Returned values are deterministic for a given seed.

new ref create(
  x: U64 val = seq,
  y: U64 val = seq)
: MT ref^

Parameters

  • x: U64 val = seq
  • y: U64 val = seq

Returns


Public Functions

next

A random integer in [0, 2^64 - 1]

fun ref next()
: U64 val

Returns


has_next

fun tag has_next()
: Bool val

Returns


u8

fun ref u8()
: U8 val

Returns


u16

fun ref u16()
: U16 val

Returns


u32

fun ref u32()
: U32 val

Returns


u64

fun ref u64()
: U64 val

Returns


u128

fun ref u128()
: U128 val

Returns


ulong

fun ref ulong()
: ULong val

Returns


usize

fun ref usize()
: USize val

Returns


i8

fun ref i8()
: I8 val

Returns


i16

fun ref i16()
: I16 val

Returns


i32

fun ref i32()
: I32 val

Returns


i64

fun ref i64()
: I64 val

Returns


i128

fun ref i128()
: I128 val

Returns


ilong

fun ref ilong()
: ILong val

Returns


isize

fun ref isize()
: ISize val

Returns


int[optional N: ((U8 val | U16 val | U32 val | U64 val | U128 val | ULong val | USize val) & Real[N] val)]

fun ref int[optional N: ((U8 val | U16 val | U32 val | 
    U64 val | U128 val | ULong val | 
    USize val) & Real[N] val)](
  n: N)
: N

Parameters

  • n: N

Returns

  • N

real

fun ref real()
: F64 val

Returns


shuffle[A: A]

fun ref shuffle[A: A](
  array: Array[A] ref)
: None val

Parameters

Returns


Private Functions

_populate

Repopulates the state array.

fun ref _populate()
: None val

Returns


_n

fun tag _n()
: USize val

Returns


_m

fun tag _m()
: USize val

Returns


_n1

fun tag _n1()
: USize val

Returns


_mask

fun tag _mask(
  x: U64 val,
  y: U64 val)
: U64 val

Parameters

Returns


_matrix

fun tag _matrix(
  x: U64 val)
: U64 val

Parameters

Returns


_mix

fun tag _mix(
  x: U64 val,
  y: U64 val)
: U64 val

Parameters

Returns


_lower

fun ref _lower(
  i: USize val,
  x: U64 val)
: U64 val ?

Parameters

Returns


_upper

fun ref _upper(
  i: USize val,
  x: U64 val)
: U64 val ?

Parameters

Returns


_wrap

fun ref _wrap()
: U64 val ?

Returns