cern.jet.random.tfloat
Class FloatUniform

java.lang.Object
  cern.colt.PersistentObject
      cern.jet.random.tfloat.AbstractFloatDistribution
          cern.jet.random.tfloat.AbstractContinousFloatDistribution
              cern.jet.random.tfloat.FloatUniform

All Implemented Interfaces:

FloatFunction, IntFunction, Serializable, Cloneable

public class FloatUniform
extends AbstractContinousFloatDistribution

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

Author:

wolfgang.hoschek@cern.ch

See Also:

Serialized Form

Constructor Summary

FloatUniform(float min, float max, FloatRandomEngine randomGenerator)
Constructs a uniform distribution with the given minimum and maximum.

FloatUniform(float min, float max, int seed)
Constructs a uniform distribution with the given minimum and maximum, using a FloatMersenneTwister seeded with the given seed.

FloatUniform(FloatRandomEngine randomGenerator)
Constructs a uniform distribution with min=0.0 and max=1.0.

Method Summary

float	cdf(float x) Returns the cumulative distribution function (assuming a continous uniform distribution).
boolean	nextBoolean() Returns a uniformly distributed random boolean.
float	nextFloat() Returns a uniformly distributed random number in the open interval (min,max) (excluding min and max).
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).
float	pdf(float x) Returns the probability distribution function (assuming a continous uniform distribution).
void	setState(float min, float max) Sets the internal state.
static boolean	staticNextBoolean() Returns a uniformly distributed random boolean.
static float	staticNextFloat() Returns a uniformly distributed random number in the open interval (0,1) (excluding 0 and 1).
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(FloatRandomEngine randomGenerator) Sets the uniform random number generation engine shared by all static methods.
String	toString() Returns a String representation of the receiver.

Methods inherited from class cern.jet.random.tfloat.AbstractFloatDistribution

apply, apply, clone, makeDefaultGenerator

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

FloatUniform

public FloatUniform(float min,
                    float max,
                    int seed)

Constructs a uniform distribution with the given minimum and maximum, using a FloatMersenneTwister seeded with the given seed.

FloatUniform

public FloatUniform(float min,
                    float max,
                    FloatRandomEngine randomGenerator)

Constructs a uniform distribution with the given minimum and maximum.

FloatUniform

public FloatUniform(FloatRandomEngine randomGenerator)

Constructs a uniform distribution with min=0.0 and max=1.0.

Method Detail

cdf

public float cdf(float x)

Returns the cumulative distribution function (assuming a continous uniform distribution).

nextBoolean

public boolean nextBoolean()

Returns a uniformly distributed random boolean.

nextFloat

public float nextFloat()

Returns a uniformly distributed random number in the open interval (min,max) (excluding min and max).

Specified by:

nextFloat in class AbstractFloatDistribution

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:

nextInt in class AbstractFloatDistribution

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 float pdf(float x)

Returns the probability distribution function (assuming a continous uniform distribution).

setState

public void setState(float min,
                     float max)

Sets the internal state.

staticNextBoolean

public static boolean staticNextBoolean()

Returns a uniformly distributed random boolean.

staticNextFloat

public static float staticNextFloat()

Returns a uniformly distributed random number in the open interval (0,1) (excluding 0 and 1).

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(FloatRandomEngine 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 String toString()

Returns a String representation of the receiver.

Overrides:

toString in class Object