Class XorShift128

Namespace

LibGameAI.PRNG

Assembly

PRNG.dll

A 128-bit implementation of a XorShift pseudo-random number generator.

public class XorShift128 : Random

Inheritance

object

Random

XorShift128

Inherited Members

Random.Next(int)

Random.NextBytes(Span<byte>)

Random.NextDouble()

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

Useful links:

• Xorshift - Wikipedia
• Implementation of this particular XorShift in OpenCL
• .NET Core implementation of the Random class
• .NET Framework implementation of the Random class
• Documentation on how to extend the Random class

Constructors

XorShift128()

public XorShift128()

XorShift128(int)

public XorShift128(int seed)

Parameters

seed int

XorShift128(long)

public XorShift128(long seed)

Parameters

seed long

Methods

Next()

Returns a non-negative random integer.

public override int Next()

Returns

int

A 32-bit signed integer that is greater than or equal to 0 and less than MaxValue.

Next(int, int)

Returns a random integer that is within a specified range.

public override int Next(int minValue, int maxValue)

Parameters

minValue int

The inclusive lower bound of the random number returned.

maxValue int

The exclusive upper bound of the random number returned. maxValue must be greater than or equal to minValue.

Returns

int

A 32-bit signed integer greater than or equal to minValue and less than maxValue; that is, the range of return values includes minValue but not maxValue. If minValue equals maxValue, minValue is returned.

Exceptions

ArgumentOutOfRangeException

minValue is greater than maxValue.

NextBytes(byte[])

Fills the elements of a specified array of bytes with random numbers.

public override void NextBytes(byte[] buffer)

Parameters

buffer byte[]

An array of bytes to contain random numbers.

Exceptions

ArgumentNullException

buffer is null.

Sample()

Returns a random floating-point number between 0.0 and 1.0.

protected override double Sample()

Returns

double

A double-precision floating point number that is greater than or equal to 0.0, and less than 1.0.