Class XoShiRo128Plus
- java.lang.Object
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- org.apache.commons.rng.core.BaseProvider
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- org.apache.commons.rng.core.source32.IntProvider
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- org.apache.commons.rng.core.source32.AbstractXoShiRo128
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- org.apache.commons.rng.core.source32.XoShiRo128Plus
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- All Implemented Interfaces:
RandomIntSource
,JumpableUniformRandomProvider
,LongJumpableUniformRandomProvider
,RestorableUniformRandomProvider
,UniformRandomProvider
public class XoShiRo128Plus extends AbstractXoShiRo128
A fast 32-bit generator suitable forfloat
generation. This is slightly faster than the all-purpose generatorXoShiRo128StarStar
.This is a member of the Xor-Shift-Rotate family of generators. Memory footprint is 128 bits.
- Since:
- 1.3
- See Also:
- Original source code, xorshiro / xoroshiro generators
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Field Summary
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Fields inherited from class org.apache.commons.rng.core.source32.AbstractXoShiRo128
state0, state1, state2, state3
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Constructor Summary
Constructors Modifier Constructor Description XoShiRo128Plus(int[] seed)
Creates a new instance.XoShiRo128Plus(int seed0, int seed1, int seed2, int seed3)
Creates a new instance using a 4 element seed.protected
XoShiRo128Plus(XoShiRo128Plus source)
Creates a copy instance.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description protected XoShiRo128Plus
copy()
Create a copy.protected int
nextOutput()
Use the current state to compute the next output from the generator.-
Methods inherited from class org.apache.commons.rng.core.source32.AbstractXoShiRo128
getStateInternal, jump, longJump, next, setStateInternal
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Methods inherited from class org.apache.commons.rng.core.source32.IntProvider
nextBoolean, nextBytes, nextBytes, nextBytesFill, nextDouble, 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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XoShiRo128Plus
public XoShiRo128Plus(int[] seed)
Creates a new instance.- Parameters:
seed
- Initial seed. If the length is larger than 4, only the first 4 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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XoShiRo128Plus
public XoShiRo128Plus(int seed0, int seed1, int seed2, int seed3)
Creates a new instance using a 4 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.
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XoShiRo128Plus
protected XoShiRo128Plus(XoShiRo128Plus source)
Creates a copy instance.- Parameters:
source
- Source to copy.
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Method Detail
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nextOutput
protected int 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 fromAbstractXoShiRo128.next()
before the current state is updated.- Specified by:
nextOutput
in classAbstractXoShiRo128
- Returns:
- the next output
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copy
protected XoShiRo128Plus copy()
Create a copy.- Specified by:
copy
in classAbstractXoShiRo128
- Returns:
- the copy
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