Class XoShiRo512Plus
- java.lang.Object
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- org.apache.commons.rng.core.BaseProvider
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- org.apache.commons.rng.core.source64.LongProvider
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- org.apache.commons.rng.core.source64.AbstractXoShiRo512
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- org.apache.commons.rng.core.source64.XoShiRo512Plus
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- All Implemented Interfaces:
RandomLongSource
,JumpableUniformRandomProvider
,LongJumpableUniformRandomProvider
,RestorableUniformRandomProvider
,UniformRandomProvider
public class XoShiRo512Plus extends AbstractXoShiRo512
A fast 64-bit generator suitable fordouble
generation. This is slightly faster than the all-purpose generatorXoShiRo512StarStar
.This is a member of the Xor-Shift-Rotate family of generators. Memory footprint is 512 bits and the period is 2512-1. Speed is expected to be slower than
XoShiRo256Plus
.- Since:
- 1.3
- See Also:
- Original source code, xorshiro / xoroshiro generators
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Constructor Summary
Constructors Modifier Constructor Description XoShiRo512Plus(long[] seed)
Creates a new instance.XoShiRo512Plus(long seed0, long seed1, long seed2, long seed3, long seed4, long seed5, long seed6, long seed7)
Creates a new instance using an 8 element seed.protected
XoShiRo512Plus(XoShiRo512Plus source)
Creates a copy instance.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected XoShiRo512Plus
copy()
Create a copy.protected long
nextOutput()
Use the current state to compute the next output from the generator.-
Methods inherited from class org.apache.commons.rng.core.source64.AbstractXoShiRo512
getStateInternal, jump, longJump, next, setStateInternal
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Methods inherited from class org.apache.commons.rng.core.source64.LongProvider
nextBoolean, nextInt, nextLong, resetCachedState
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Methods inherited from class org.apache.commons.rng.core.BaseProvider
checkIndex, checkStateSize, composeStateInternal, extendSeed, extendSeed, fillState, fillState, restoreState, saveState, splitStateInternal, toString
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.apache.commons.rng.JumpableUniformRandomProvider
jumps, jumps
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Methods inherited from interface org.apache.commons.rng.LongJumpableUniformRandomProvider
longJumps, longJumps
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Methods inherited from interface org.apache.commons.rng.UniformRandomProvider
doubles, doubles, doubles, doubles, ints, ints, ints, ints, longs, longs, longs, longs, nextBoolean, nextBytes, nextBytes, nextDouble, nextDouble, nextDouble, nextFloat, nextFloat, nextFloat, nextInt, nextInt, nextInt, nextLong, nextLong, nextLong
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Constructor Detail
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XoShiRo512Plus
public XoShiRo512Plus(long[] seed)
Creates a new instance.- Parameters:
seed
- Initial seed. If the length is larger than 8, only the first 8 elements will be used; if smaller, the remaining elements will be automatically set. A seed containing all zeros will create a non-functional generator.
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XoShiRo512Plus
public XoShiRo512Plus(long seed0, long seed1, long seed2, long seed3, long seed4, long seed5, long seed6, long seed7)
Creates a new instance using an 8 element seed. A seed containing all zeros will create a non-functional generator.- Parameters:
seed0
- Initial seed element 0.seed1
- Initial seed element 1.seed2
- Initial seed element 2.seed3
- Initial seed element 3.seed4
- Initial seed element 4.seed5
- Initial seed element 5.seed6
- Initial seed element 6.seed7
- Initial seed element 7.
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XoShiRo512Plus
protected XoShiRo512Plus(XoShiRo512Plus source)
Creates a copy instance.- Parameters:
source
- Source to copy.
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Method Detail
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nextOutput
protected long nextOutput()
Use the current state to compute the next output from the generator. The output function shall vary with respect to different generators. This method is called fromAbstractXoShiRo512.next()
before the current state is updated.- Specified by:
nextOutput
in classAbstractXoShiRo512
- Returns:
- the next output
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copy
protected XoShiRo512Plus copy()
Create a copy.- Specified by:
copy
in classAbstractXoShiRo512
- Returns:
- the copy
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