Class MersenneTwister64
java.lang.Object
org.apache.commons.rng.core.BaseProvider
org.apache.commons.rng.core.source64.LongProvider
org.apache.commons.rng.core.source64.MersenneTwister64
- All Implemented Interfaces:
RandomLongSource,RestorableUniformRandomProvider,UniformRandomProvider
public class MersenneTwister64 extends LongProvider
This class provides the 64-bits version of the originally 32-bits
Mersenne Twister.
This class is mainly a Java port of the 2014/2/23 version of the generator written in C by Takuji Nishimura and Makoto Matsumoto.
Here is their original copyright:
| Copyright (C) 2004, Makoto Matsumoto and Takuji Nishimura, All rights reserved. |
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
|
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
- Since:
- 1.0
- See Also:
- Mersenne Twister (Wikipedia)
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Constructor Summary
Constructors Constructor Description MersenneTwister64(long[] seed)Creates a new random number generator. -
Method Summary
Modifier and Type Method Description protected byte[]getStateInternal()Creates a snapshot of the RNG state.longnext()protected voidsetStateInternal(byte[] s)Resets the RNG to the givenstate.Methods inherited from class org.apache.commons.rng.core.source64.LongProvider
nextBoolean, nextBytes, nextBytes, nextDouble, nextFloat, nextInt, nextLongMethods inherited from class org.apache.commons.rng.core.BaseProvider
checkIndex, checkStateSize, composeStateInternal, fillState, fillState, nextInt, nextLong, restoreState, saveState, splitStateInternal, toString
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Constructor Details
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MersenneTwister64
public MersenneTwister64(long[] seed)Creates a new random number generator.- Parameters:
seed- Initial seed.
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Method Details
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getStateInternal
protected byte[] getStateInternal()Creates a snapshot of the RNG state.- Overrides:
getStateInternalin classLongProvider- Returns:
- the internal state.
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setStateInternal
protected void setStateInternal(byte[] s)Resets the RNG to the givenstate.- Overrides:
setStateInternalin classLongProvider- Parameters:
s- State (previously obtained by a call toBaseProvider.getStateInternal()).- See Also:
BaseProvider.checkStateSize(byte[],int)
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next
public long next()- Returns:
- the next random value.
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