public class XoShiRo256PlusPlus extends LongProvider
This is a member of the Xor-Shift-Rotate family of generators. Memory footprint is 256 bits and the period is 2256-1.
Modifier and Type | Field and Description |
---|---|
protected long |
state0
State 0 of the generator.
|
protected long |
state1
State 1 of the generator.
|
protected long |
state2
State 2 of the generator.
|
protected long |
state3
State 3 of the generator.
|
Modifier | Constructor and Description |
---|---|
|
XoShiRo256PlusPlus(long[] seed)
Creates a new instance.
|
|
XoShiRo256PlusPlus(long seed0,
long seed1,
long seed2,
long seed3)
Creates a new instance using a 4 element seed.
|
protected |
XoShiRo256PlusPlus(XoShiRo256PlusPlus source)
Creates a copy instance.
|
Modifier and Type | Method and Description |
---|---|
protected XoShiRo256PlusPlus |
copy()
Create a copy.
|
protected byte[] |
getStateInternal()
Creates a snapshot of the RNG state.
|
UniformRandomProvider |
jump() |
JumpableUniformRandomProvider |
longJump() |
long |
next() |
protected long |
nextOutput()
Use the current state to compute the next output from the generator.
|
protected void |
setStateInternal(byte[] s)
Resets the RNG to the given
state . |
nextBoolean, nextInt, nextLong, resetCachedState
checkIndex, checkStateSize, composeStateInternal, extendSeed, extendSeed, fillState, fillState, restoreState, saveState, splitStateInternal, toString
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
longJumps, longJumps
jumps, jumps
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
protected long state0
protected long state1
protected long state2
protected long state3
public XoShiRo256PlusPlus(long[] seed)
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.public XoShiRo256PlusPlus(long seed0, long seed1, long seed2, long seed3)
seed0
- Initial seed element 0.seed1
- Initial seed element 1.seed2
- Initial seed element 2.seed3
- Initial seed element 3.protected XoShiRo256PlusPlus(XoShiRo256PlusPlus source)
source
- Source to copy.protected long nextOutput()
next()
before the current state is updated.protected XoShiRo256PlusPlus copy()
protected byte[] getStateInternal()
getStateInternal
in class LongProvider
protected void setStateInternal(byte[] s)
state
.setStateInternal
in class LongProvider
s
- State (previously obtained by a call to
BaseProvider.getStateInternal()
).BaseProvider.checkStateSize(byte[],int)
public long next()
next
in interface RandomLongSource
public UniformRandomProvider jump()
The jump size is the equivalent of 2128
calls to nextLong()
. It can provide
up to 2128 non-overlapping subsequences.
jump
in interface JumpableUniformRandomProvider
public JumpableUniformRandomProvider longJump()
The jump size is the equivalent of 2192 calls to
nextLong()
. It can provide up to
264 non-overlapping subsequences of length 2192; each
subsequence can provide up to 264 non-overlapping subsequences of
length 2128 using the jump()
method.
longJump
in interface LongJumpableUniformRandomProvider
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