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java.lang.Objectsim.util.distribution.AbstractDistribution
sim.util.distribution.AbstractContinousDistribution
sim.util.distribution.BreitWigner
public class BreitWigner
BreitWigner (aka Lorentz) distribution; See the math definition. A more general form of the Cauchy distribution.
Instance methods operate on a user supplied uniform random number generator; they are unsynchronized.
Implementation: This is a port of RandBreitWigner used in CLHEP 1.4.0 (C++).
Field Summary | |
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protected double |
cut
|
protected double |
gamma
|
protected double |
mean
|
Fields inherited from class sim.util.distribution.AbstractDistribution |
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randomGenerator |
Constructor Summary | |
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BreitWigner(double mean,
double gamma,
double cut,
MersenneTwisterFast randomGenerator)
Constructs a BreitWigner distribution. |
Method Summary | |
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double |
nextDouble()
Returns a random number from the distribution. |
double |
nextDouble(double mean,
double gamma,
double cut)
Returns a random number from the distribution; bypasses the internal state. |
void |
setState(double mean,
double gamma,
double cut)
Sets the mean, gamma and cut parameters. |
java.lang.String |
toString()
Returns a String representation of the receiver. |
Methods inherited from class sim.util.distribution.AbstractDistribution |
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apply, apply, getRandomGenerator, nextInt, setRandomGenerator |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Field Detail |
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protected double mean
protected double gamma
protected double cut
Constructor Detail |
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public BreitWigner(double mean, double gamma, double cut, MersenneTwisterFast randomGenerator)
cut
- cut==Double.NEGATIVE_INFINITY indicates "don't cut".Method Detail |
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public double nextDouble()
nextDouble
in class AbstractDistribution
public double nextDouble(double mean, double gamma, double cut)
cut
- cut==Double.NEGATIVE_INFINITY indicates "don't cut".public void setState(double mean, double gamma, double cut)
cut
- cut==Double.NEGATIVE_INFINITY indicates "don't cut".public java.lang.String toString()
toString
in class java.lang.Object
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