STK::Funct::Seriedl Class Reference

This Serie computes. More...

Inheritance diagram for STK::Funct::Seriedl:

Public Member Functions
	Seriedl (Real const &a, Real const &x)
	constructor
Real	firstImpl () const
	compute the first term of the serie
Real	nextImpl () const
	compute the next terms
Public Member Functions inherited from STK::ISerie< Seriedl >
Real	first () const
Real	next () const
Public Member Functions inherited from STK::IRecursiveTemplate< Derived >
Derived &	asDerived ()
	static cast : return a reference of this with a cast to the derived class.
Derived const &	asDerived () const
	static cast : return a const reference of this with a cast to the derived class.
Derived *	asPtrDerived ()
	static cast : return a ptr on a Derived of this with a cast to the derived class.
Derived const *	asPtrDerived () const
	static cast : return a ptr on a constant Derived of this with a cast to the derived class.
Derived *	clone () const
	create a leaf using the copy constructor of the Derived class.
Derived *	clone (bool isRef) const
	create a leaf using the copy constructor of the Derived class and a flag determining if the clone is a reference or not.

Private Attributes
Real const &	x_
int	n_
Real	xn_factn_
Real	aplusn_

Additional Inherited Members
Protected Member Functions inherited from STK::ISerie< Seriedl >
	ISerie ()
	Default Constructor.
	~ISerie ()
	destructor.
Protected Member Functions inherited from STK::IRecursiveTemplate< Derived >
	IRecursiveTemplate ()
	constructor.
	~IRecursiveTemplate ()
	destructor.

Detailed Description

This Serie computes.

and is used in gammaRatio_dl.

Definition at line 77 of file STK_Funct_gammaRatio.cpp.

Constructor & Destructor Documentation

Seriedl()

STK::Funct::Seriedl::Seriedl ( Real const &  a, Real const &  x  )

inline

constructor

Definition at line 87 of file STK_Funct_gammaRatio.cpp.

                  : x_(x), n_(1), xn_factn_(x), aplusn_(a+1.)
    {}

Member Function Documentation

firstImpl()

Real STK::Funct::Seriedl::firstImpl ( ) const

inline

compute the first term of the serie

Definition at line 91 of file STK_Funct_gammaRatio.cpp.

{ return x_/aplusn_;}

References aplusn_, and x_.

nextImpl()

Real STK::Funct::Seriedl::nextImpl ( ) const

inline

compute the next terms

Definition at line 93 of file STK_Funct_gammaRatio.cpp.

    {
      // n and x^n/ n!
      xn_factn_ *= (x_/(++n_));
      // x^n/((a+n)n!)
      return xn_factn_/(++aplusn_);
    }

References aplusn_, n_, x_, and xn_factn_.

Member Data Documentation

aplusn_

Real STK::Funct::Seriedl::aplusn_

mutableprivate

Definition at line 83 of file STK_Funct_gammaRatio.cpp.

Referenced by firstImpl(), and nextImpl().

n_

int STK::Funct::Seriedl::n_

mutableprivate

Definition at line 81 of file STK_Funct_gammaRatio.cpp.

Referenced by nextImpl().

x_

Real const& STK::Funct::Seriedl::x_

private

Definition at line 80 of file STK_Funct_gammaRatio.cpp.

Referenced by firstImpl(), and nextImpl().

xn_factn_

Real STK::Funct::Seriedl::xn_factn_

mutableprivate

Definition at line 82 of file STK_Funct_gammaRatio.cpp.

Referenced by nextImpl().

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The documentation for this class was generated from the following file:

• STK_Funct_gammaRatio.cpp