drasys.or
Interface FunctionsI

All Known Implementing Classes:

Functions

public interface FunctionsI

An interface used by algorithms to access useful functions not supplied in 'java.lang.Math'.

Method Summary
double	binomialCoefficient(int n, int k)           Returns the binomial coefficient: n!/(k!*(n-k)!)
double	lnFactorial(int x)           Returns the natural logarithm of x factorial 'y = ln(x!)'.
double	lnGamma(double x)           Returns the natural logarithm of the gama function of x 'y = ln(gama(x))'.

 

Method Detail

lnGamma

public double lnGamma(double x)

Returns the natural logarithm of the gama function of x 'y = ln(gama(x))'.

lnFactorial

public double lnFactorial(int x)

Returns the natural logarithm of x factorial 'y = ln(x!)'.

binomialCoefficient

public double binomialCoefficient(int n,
                                  int k)

Returns the binomial coefficient: n!/(k!*(n-k)!)