Class XoRoShiRo128Plus
java.lang.Object
org.apache.commons.rng.core.BaseProvider
org.apache.commons.rng.core.source64.LongProvider
org.apache.commons.rng.core.source64.AbstractXoRoShiRo128
org.apache.commons.rng.core.source64.XoRoShiRo128Plus
- All Implemented Interfaces:
RandomLongSource
,JumpableUniformRandomProvider
,LongJumpableUniformRandomProvider
,RestorableUniformRandomProvider
,UniformRandomProvider
A fast 64-bit generator suitable for
double
generation. This is slightly faster than the
all-purpose generator XoRoShiRo128StarStar
.
This is a member of the Xor-Shift-Rotate family of generators. Memory footprint is 128 bits
and the period is 2128-1. Speed is expected to be similar to
XoShiRo256Plus
.
- Since:
- 1.3
- See Also:
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Field Summary
Fields inherited from class org.apache.commons.rng.core.source64.AbstractXoRoShiRo128
state0, state1
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Constructor Summary
ConstructorsModifierConstructorDescriptionXoRoShiRo128Plus
(long[] seed) Creates a new instance.XoRoShiRo128Plus
(long seed0, long seed1) Creates a new instance using a 2 element seed.protected
XoRoShiRo128Plus
(XoRoShiRo128Plus source) Creates a copy instance. -
Method Summary
Modifier and TypeMethodDescriptionprotected XoRoShiRo128Plus
copy()
Create a copy.protected long
Use the current state to compute the next output from the generator.Methods inherited from class org.apache.commons.rng.core.source64.AbstractXoRoShiRo128
getStateInternal, jump, longJump, next, performJump, setStateInternal
Methods inherited from class org.apache.commons.rng.core.source64.LongProvider
nextBoolean, nextInt, nextLong, resetCachedState
Methods inherited from class org.apache.commons.rng.core.BaseProvider
checkIndex, checkStateSize, composeStateInternal, extendSeed, extendSeed, fillState, fillState, restoreState, saveState, splitStateInternal, toString
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
Methods inherited from interface org.apache.commons.rng.JumpableUniformRandomProvider
jumps, jumps
Methods inherited from interface org.apache.commons.rng.LongJumpableUniformRandomProvider
longJumps, longJumps
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 Details
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XoRoShiRo128Plus
public XoRoShiRo128Plus(long[] seed) Creates a new instance.- Parameters:
seed
- Initial seed. If the length is larger than 2, only the first 2 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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XoRoShiRo128Plus
public XoRoShiRo128Plus(long seed0, long seed1) Creates a new instance using a 2 element seed. A seed containing all zeros will create a non-functional generator.- Parameters:
seed0
- Initial seed element 0.seed1
- Initial seed element 1.
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XoRoShiRo128Plus
Creates a copy instance.- Parameters:
source
- Source to copy.
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Method Details
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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 fromAbstractXoRoShiRo128.next()
before the current state is updated.- Specified by:
nextOutput
in classAbstractXoRoShiRo128
- Returns:
- the next output
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copy
Create a copy.- Specified by:
copy
in classAbstractXoRoShiRo128
- Returns:
- the copy
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