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SSJ V. labo. |
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java.lang.Objectumontreal.iro.lecuyer.rng.RandomStreamBase
umontreal.iro.lecuyer.rng.WELL1024
public class WELL1024
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 1024 bits and a period length of approximatively
21024. The values of V, W and Z are 2300,
2400 and 2700 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.
The output of nextValue has 32 bits of precision.
| Constructor Summary | |
|---|---|
WELL1024()
Constructs a new stream. |
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WELL1024(String name)
Constructs a new stream with the identifier name (used in the toString method). |
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| Method Summary | |
|---|---|
WELL1024 |
clone()
Clones the current generator and return its copy. |
int[] |
getState()
Returns the current state of the stream, represented as an array of 32 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 this class to the 32 integers of array seed[0..31]. |
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 |
|---|
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 WELL1024()
public WELL1024(String name)
name - name of the stream| Method Detail |
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public static void setPackageSeed(int[] seed)
seed - array of 32 elements representing the seedpublic void setSeed(int[] seed)
seed - array of 32 elements representing the seedpublic int[] getState()
public void resetStartStream()
RandomStream
resetStartStream in interface RandomStreamresetStartStream in class RandomStreamBasepublic void resetStartSubstream()
RandomStream
resetStartSubstream in interface RandomStreamresetStartSubstream in class RandomStreamBasepublic void resetNextSubstream()
RandomStream
resetNextSubstream in interface RandomStreamresetNextSubstream in class RandomStreamBasepublic String toString()
RandomStream
toString in interface RandomStreamtoString in class RandomStreamBasepublic WELL1024 clone()
clone in interface CloneableRandomStreamclone in class RandomStreamBase
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SSJ V. labo. |
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