Class StochasticState

Namespace

Virtufin.Base.Execution

Assembly

Virtufin.Base.dll

State for stochastic executors — a seeded PRNG. Deterministic given the seed, reproducible across runs. Mutable: the PRNG seed evolves as the executor steps.

public sealed class StochasticState : IExecutionState

Inheritance

object

StochasticState

Implements

IExecutionState

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Constructors

StochasticState(int)

Construct a stochastic state from a seed.

public StochasticState(int seed)

Parameters

seed int

Initial PRNG seed.

Properties

Seed

Current PRNG seed (mutable). Read/write is atomic, but this alone does not make a read-modify-write sequence spanning multiple calls thread-safe -- use NextRandom() to advance the seed, not manual read-then-write.

public int Seed { get; set; }

Property Value

int

Methods

NextNormal(double, double)

Generate a normally-distributed value via Box-Muller (approximate).

public double NextNormal(double mean = 0, double stddev = 1)

Parameters

mean double

stddev double

Returns

double

NextRandom()

Simple linear-congruential PRNG step. Thread-safe: concurrent callers each get a distinct step of the sequence via compare-and-swap retry, rather than corrupting Seed under a torn or lost update.

public int NextRandom()

Returns

int

NextUnit()

Generate a uniform random number in [0, 1).

public double NextUnit()

Returns

double