Package cern.jet.random
Class Uniform
- java.lang.Object
-
- 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
-
-
Field Summary
Fields Modifier and Type Field Description protected doublemaxprotected doubleminprotected static Uniformshared-
Fields inherited from class cern.jet.random.AbstractDistribution
randomGenerator
-
Fields inherited from class cern.colt.PersistentObject
serialVersionUID
-
-
Constructor Summary
Constructors Constructor Description Uniform(double min, double max, int seed)Constructs a uniform distribution with the given minimum and maximum, using aMersenneTwisterseeded 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.
-
Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method Description doublecdf(double x)Returns the cumulative distribution function (assuming a continous uniform distribution).booleannextBoolean()Returns a uniformly distributed random boolean.doublenextDouble()Returns a uniformly distributed random number in the open interval (min,max) (excluding min and max).doublenextDoubleFromTo(double from, double to)Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to).floatnextFloatFromTo(float from, float to)Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to).intnextInt()Returns a uniformly distributed random number in the closed interval [min,max] (including min and max).intnextIntFromTo(int from, int to)Returns a uniformly distributed random number in the closed interval [from,to] (including from and to).longnextLongFromTo(long from, long to)Returns a uniformly distributed random number in the closed interval [from,to] (including from and to).doublepdf(double x)Returns the probability distribution function (assuming a continous uniform distribution).voidsetState(double min, double max)Sets the internal state.static booleanstaticNextBoolean()Returns a uniformly distributed random boolean.static doublestaticNextDouble()Returns a uniformly distributed random number in the open interval (0,1) (excluding 0 and 1).static doublestaticNextDoubleFromTo(double from, double to)Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to).static floatstaticNextFloatFromTo(float from, float to)Returns a uniformly distributed random number in the open interval (from,to) (excluding from and to).static intstaticNextIntFromTo(int from, int to)Returns a uniformly distributed random number in the closed interval [from,to] (including from and to).static longstaticNextLongFromTo(long from, long to)Returns a uniformly distributed random number in the closed interval [from,to] (including from and to).static voidstaticSetRandomEngine(RandomEngine randomGenerator)Sets the uniform random number generation engine shared by all static methods.java.lang.StringtoString()Returns a String representation of the receiver.-
Methods inherited from class cern.jet.random.AbstractDistribution
apply, apply, clone, getRandomGenerator, makeDefaultGenerator, setRandomGenerator
-
-
-
-
Field Detail
-
min
protected double min
-
max
protected double max
-
shared
protected static Uniform shared
-
-
Constructor Detail
-
Uniform
public Uniform(double min, double max, int seed)Constructs a uniform distribution with the given minimum and maximum, using aMersenneTwisterseeded with the given seed.
-
Uniform
public Uniform(double min, double max, RandomEngine randomGenerator)Constructs a uniform distribution with the given minimum and maximum.
-
Uniform
public Uniform(RandomEngine randomGenerator)
Constructs a uniform distribution with min=0.0 and max=1.0.
-
-
Method Detail
-
cdf
public double cdf(double x)
Returns the cumulative distribution function (assuming a continous uniform distribution).
-
nextBoolean
public boolean nextBoolean()
Returns a uniformly distributed random boolean.
-
nextDouble
public double nextDouble()
Returns a uniformly distributed random number in the open interval (min,max) (excluding min and max).- Specified by:
nextDoublein classAbstractDistribution
-
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.
-
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.
-
nextInt
public int nextInt()
Returns a uniformly distributed random number in the closed interval [min,max] (including min and max).- Overrides:
nextIntin classAbstractDistribution
-
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.
-
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.
-
pdf
public double pdf(double x)
Returns the probability distribution function (assuming a continous uniform distribution).
-
setState
public void setState(double min, double max)Sets the internal state.
-
staticNextBoolean
public static boolean staticNextBoolean()
Returns a uniformly distributed random boolean.
-
staticNextDouble
public static double staticNextDouble()
Returns a uniformly distributed random number in the open interval (0,1) (excluding 0 and 1).
-
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.
-
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.
-
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.
-
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.
-
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.
-
toString
public java.lang.String toString()
Returns a String representation of the receiver.- Overrides:
toStringin classjava.lang.Object
-
-