Package org.apache.commons.rng

Interface RestorableUniformRandomProvider

All Superinterfaces:

UniformRandomProvider

public interface RestorableUniformRandomProvider
extends UniformRandomProvider

Applies to generators whose internal state can be saved and restored.

Since:

1.0

Method Summary

Modifier and Type	Method	Description
void	restoreState(RandomProviderState state)	Restores the state of a generator.
RandomProviderState	saveState()	Saves the state of a generator.

Methods inherited from interface org.apache.commons.rng.UniformRandomProvider

nextBoolean, nextBytes, nextBytes, nextDouble, nextFloat, nextInt, nextInt, nextLong, nextLong

Method Detail

saveState

RandomProviderState saveState()

Saves the state of a generator.

Returns:

the current state of this instance. It is a value that can subsequently be passed to the restore method.

Throws:

UnsupportedOperationException - if the underlying source of randomness does not support this functionality.

restoreState

void restoreState(RandomProviderState state)

Restores the state of a generator.

Parameters:

state - State which this instance will be set to. This parameter would usually have been obtained by a call to saveState performed either on the same object as this one, or an object of the exact same class.

Throws:

UnsupportedOperationException - if the underlying source of randomness does not support this functionality.

IllegalArgumentException - if it was detected that the state argument is incompatible with this intance.