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java.lang.Object umontreal.iro.lecuyer.rng.RandomStreamBase umontreal.iro.lecuyer.rng.WELL512
public class WELL512
This class implements the RandomStream
interface via inheritance from
RandomStreamBase
. The backbone generator is a Well Equidistributed
Long period Linear Random Number Generator (WELL), proposed by F.
Panneton, and which has a state size
of 512 bits and a period length of approximatively
2512. The values of V, W and Z are 2150,
2200 and 2350 respectively (see RandomStream
for their
definition). The seed of the RNG, and the state of a stream at any given
step, is a 16-dimensional vector of 32-bit integers.
Constructor Summary | |
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WELL512()
Constructs a new stream. |
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WELL512(String name)
Constructs a new stream with the identifier name (used in the toString method). |
Method Summary | |
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WELL512 |
clone()
Clones the current generator and return its copy. |
int[] |
getState()
Returns the current state of the stream, represented as an array of 16 integers. |
void |
resetNextSubstream()
Reinitializes the stream to the beginning of its next substream: Ng is computed, and Cg and Bg are set to Ng. |
void |
resetStartStream()
Reinitializes the stream to its initial state Ig: Cg and Bg are set to Ig. |
void |
resetStartSubstream()
Reinitializes the stream to the beginning of its current substream: Cg is set to Bg. |
static void |
setPackageSeed(int[] seed)
Sets the initial seed of the class WELL512 to the 16 integers of the vector seed[0..15]. |
void |
setSeed(int[] seed)
This method is discouraged for normal use. |
String |
toString()
Returns a string containing the current state of this stream. |
Methods inherited from class umontreal.iro.lecuyer.rng.RandomStreamBase |
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formatState, formatStateFull, increasedPrecision, nextArrayOfDouble, nextArrayOfInt, nextDouble, nextInt |
Methods inherited from class java.lang.Object |
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equals, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public WELL512()
public WELL512(String name)
name
- name of the streamMethod Detail |
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public static void setPackageSeed(int[] seed)
seed
- array of 16 elements representing the seedpublic void setSeed(int[] seed)
seed
- array of 16 elements representing the seedpublic int[] getState()
public WELL512 clone()
clone
in interface CloneableRandomStream
clone
in class RandomStreamBase
public void resetStartStream()
RandomStream
resetStartStream
in interface RandomStream
resetStartStream
in class RandomStreamBase
public void resetStartSubstream()
RandomStream
resetStartSubstream
in interface RandomStream
resetStartSubstream
in class RandomStreamBase
public void resetNextSubstream()
RandomStream
resetNextSubstream
in interface RandomStream
resetNextSubstream
in class RandomStreamBase
public String toString()
RandomStream
toString
in interface RandomStream
toString
in class RandomStreamBase
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