SpecialFunctions

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概要: 入れ子 | フィールド | コンストラクタ | メソッド

詳細: フィールド | コンストラクタ | メソッド

numRecipes
クラス SpecialFunctions

java.lang.Object
  numRecipes.SpecialFunctions

すべての実装インタフェース:: Function

public class SpecialFunctions
extends java.lang.Object
implements Function

Utilities for Spectial Functions. Some of them are based on the Numerical Recipes Library

コンストラクタの概要
`SpecialFunctions()`

メソッドの概要
`static double`	`alogGamma(double xx)` log(Gamma(a)) function
`static double`	`gammaP(double a, double x)` P(a x)= gamma(a,x)/Gamma(a) from 0 to x.
`static double`	`gammaQ(double a, double x)` Q(a x)= Gamma(a,x)/Gamma(a) from 0 to x.
`static double`	`gauss(double mu, double sigma, double x)` Gaussian function
`double`	`getFunction(int functionIndex, double[] parameters, double x)` Method for interface .
`static double`	`incompleteGammaDowntoX(double a, double x)` Gamma(a,x)/Gamma(a) from x to infinity
`static double`	`incompleteGammaUptoX(double a, double x)` gamma(a,x)/Gamma(a) from 0 to x
`static double`	`integrateGauss(double mu, double sigma, double lowerBound, double upperBound)` Integration of the Gaussian function.
`static double`	`poisson(double mu, long m)` Poisson distribution function

クラス java.lang.Object から継承したメソッド

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

コンストラクタの詳細

SpecialFunctions

public SpecialFunctions()

メソッドの詳細

alogGamma

public static double alogGamma(double xx)

log(Gamma(a)) function

incompleteGammaUptoX

public static double incompleteGammaUptoX(double a,
                                          double x)

gamma(a,x)/Gamma(a) from 0 to x

incompleteGammaDowntoX

public static double incompleteGammaDowntoX(double a,
                                            double x)

Gamma(a,x)/Gamma(a) from x to infinity

gammaP

public static double gammaP(double a,
                            double x)

P(a x)= gamma(a,x)/Gamma(a) from 0 to x. Using imcompleteGamma methods described above saves iterations and CPU time.

gammaQ

public static double gammaQ(double a,
                            double x)

Q(a x)= Gamma(a,x)/Gamma(a) from 0 to x. Using imcompleteGamma methods described above saves iterations and CPU time.

gauss

public static double gauss(double mu,
                           double sigma,
                           double x)

Gaussian function

poisson

public static double poisson(double mu,
                             long m)

Poisson distribution function

getFunction

public double getFunction(int functionIndex,
                          double[] parameters,
                          double x)

        Method for interface  .
        Interface the special functions given here
        to the utility routiner such as the Romberg
        Integration code that is desinged for a genereal
        function in form of Func(x).

        FunctionIndex    1     Gaussian gauss(mu, sigma, double x)
                               parameters[0]=mu
                               parameters[1]=sigma

定義:: インタフェース Function 内の getFunction

integrateGauss

public static double integrateGauss(double mu,
                                    double sigma,
                                    double lowerBound,
                                    double upperBound)

Integration of the Gaussian function. It uses the interface and the class written in Integration.java . Integration blacket [lowerBound upperBound]