Package cern.jet.random
Class Uniform
- java.lang.Object
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- All Implemented Interfaces:
DoubleFunction
,IntFunction
,java.io.Serializable
,java.lang.Cloneable
public class Uniform extends AbstractContinousDistribution
Uniform distribution; Math definition and animated definition.Instance methods operate on a user supplied uniform random number generator; they are unsynchronized.
- Static methods operate on a default uniform random number generator; they are synchronized.
- Version:
- 1.0, 09/24/99
- See Also:
- Serialized Form
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Field Summary
Fields Modifier and Type Field Description protected double
max
protected double
min
protected static Uniform
shared
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Fields inherited from class cern.jet.random.AbstractDistribution
randomGenerator
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Fields inherited from class cern.colt.PersistentObject
serialVersionUID
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Constructor Summary
Constructors Constructor Description Uniform(double min, double max, int seed)
Constructs a uniform distribution with the given minimum and maximum, using aMersenneTwister
seeded with the given seed.Uniform(double min, double max, RandomEngine randomGenerator)
Constructs a uniform distribution with the given minimum and maximum.Uniform(RandomEngine randomGenerator)
Constructs a uniform distribution with min=0.0 and max=1.0.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description double
cdf(double x)
Returns the cumulative distribution function (assuming a continous uniform distribution).boolean
nextBoolean()
Returns a uniformly distributed random boolean.double
nextDouble()
Returns a uniformly distributed random number in the open interval (min,max) (excluding min and max).double
nextDoubleFromTo(double from, double to)
Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to).float
nextFloatFromTo(float from, float to)
Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to).int
nextInt()
Returns a uniformly distributed random number in the closed interval [min,max] (including min and max).int
nextIntFromTo(int from, int to)
Returns a uniformly distributed random number in the closed interval [from,to] (including from and to).long
nextLongFromTo(long from, long to)
Returns a uniformly distributed random number in the closed interval [from,to] (including from and to).double
pdf(double x)
Returns the probability distribution function (assuming a continous uniform distribution).void
setState(double min, double max)
Sets the internal state.static boolean
staticNextBoolean()
Returns a uniformly distributed random boolean.static double
staticNextDouble()
Returns a uniformly distributed random number in the open interval (0,1) (excluding 0 and 1).static double
staticNextDoubleFromTo(double from, double to)
Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to).static float
staticNextFloatFromTo(float from, float to)
Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to).static int
staticNextIntFromTo(int from, int to)
Returns a uniformly distributed random number in the closed interval [from,to] (including from and to).static long
staticNextLongFromTo(long from, long to)
Returns a uniformly distributed random number in the closed interval [from,to] (including from and to).static void
staticSetRandomEngine(RandomEngine randomGenerator)
Sets the uniform random number generation engine shared by all static methods.java.lang.String
toString()
Returns a String representation of the receiver.-
Methods inherited from class cern.jet.random.AbstractDistribution
apply, apply, clone, getRandomGenerator, makeDefaultGenerator, setRandomGenerator
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Field Detail
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min
protected double min
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max
protected double max
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shared
protected static Uniform shared
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Constructor Detail
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Uniform
public Uniform(double min, double max, int seed)
Constructs a uniform distribution with the given minimum and maximum, using aMersenneTwister
seeded with the given seed.
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Uniform
public Uniform(double min, double max, RandomEngine randomGenerator)
Constructs a uniform distribution with the given minimum and maximum.
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Uniform
public Uniform(RandomEngine randomGenerator)
Constructs a uniform distribution with min=0.0 and max=1.0.
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Method Detail
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cdf
public double cdf(double x)
Returns the cumulative distribution function (assuming a continous uniform distribution).
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nextBoolean
public boolean nextBoolean()
Returns a uniformly distributed random boolean.
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nextDouble
public double nextDouble()
Returns a uniformly distributed random number in the open interval (min,max) (excluding min and max).- Specified by:
nextDouble
in classAbstractDistribution
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nextDoubleFromTo
public double nextDoubleFromTo(double from, double to)
Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to). Pre conditions: from <= to.
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nextFloatFromTo
public float nextFloatFromTo(float from, float to)
Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to). Pre conditions: from <= to.
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nextInt
public int nextInt()
Returns a uniformly distributed random number in the closed interval [min,max] (including min and max).- Overrides:
nextInt
in classAbstractDistribution
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nextIntFromTo
public int nextIntFromTo(int from, int to)
Returns a uniformly distributed random number in the closed interval [from,to] (including from and to). Pre conditions: from <= to.
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nextLongFromTo
public long nextLongFromTo(long from, long to)
Returns a uniformly distributed random number in the closed interval [from,to] (including from and to). Pre conditions: from <= to.
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pdf
public double pdf(double x)
Returns the probability distribution function (assuming a continous uniform distribution).
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setState
public void setState(double min, double max)
Sets the internal state.
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staticNextBoolean
public static boolean staticNextBoolean()
Returns a uniformly distributed random boolean.
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staticNextDouble
public static double staticNextDouble()
Returns a uniformly distributed random number in the open interval (0,1) (excluding 0 and 1).
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staticNextDoubleFromTo
public static double staticNextDoubleFromTo(double from, double to)
Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to). Pre conditions: from <= to.
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staticNextFloatFromTo
public static float staticNextFloatFromTo(float from, float to)
Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to). Pre conditions: from <= to.
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staticNextIntFromTo
public static int staticNextIntFromTo(int from, int to)
Returns a uniformly distributed random number in the closed interval [from,to] (including from and to). Pre conditions: from <= to.
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staticNextLongFromTo
public static long staticNextLongFromTo(long from, long to)
Returns a uniformly distributed random number in the closed interval [from,to] (including from and to). Pre conditions: from <= to.
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staticSetRandomEngine
public static void staticSetRandomEngine(RandomEngine randomGenerator)
Sets the uniform random number generation engine shared by all static methods.- Parameters:
randomGenerator
- the new uniform random number generation engine to be shared.
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toString
public java.lang.String toString()
Returns a String representation of the receiver.- Overrides:
toString
in classjava.lang.Object
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