DecayTreeFitter::ChiSquare Class Reference

#include <ChiSquare.h>

Public Member Functions
	ChiSquare (const double achi2, int andof)
	Constructor. More...
	ChiSquare ()
	Default Constructor. More...
virtual	~ChiSquare ()
	Default Destructor. More...
double	chi2PerDoF () const
	return chi2/ndof if ndof>0. returns zero otherwise. More...
ChiSquare &	operator+= (const ChiSquare &rhs)
	addition operator More...
ChiSquare &	operator-= (const ChiSquare &rhs)
	subtraction operator More...
ChiSquare	operator+ (const ChiSquare &rhs)
	addition operator More...
ChiSquare	operator- (const ChiSquare &rhs)
	subtraction operator More...
double	chi2 () const
	Retrieve const chi square. More...
int	nDoF () const
	Retrieve const number of degrees of freedom. More...
double	prob () const
	Get Cofidence level. More...

Private Attributes
double	m_chi2
	chi square More...
int	m_nDoF
	number of degrees of freedom More...

Detailed Description

Definition at line 16 of file ChiSquare.h.

Constructor & Destructor Documentation

DecayTreeFitter::ChiSquare::ChiSquare ( const double  achi2, int  andof  )

inline

Constructor.

Definition at line 21 of file ChiSquare.h.

: m_chi2(achi2),m_nDoF(andof) {}

DecayTreeFitter::ChiSquare::ChiSquare ( )

inline

Default Constructor.

Definition at line 24 of file ChiSquare.h.

                : m_chi2(0.0),
    m_nDoF(0) {}

virtual DecayTreeFitter::ChiSquare::~ChiSquare ( )

inlinevirtual

Default Destructor.

Definition at line 28 of file ChiSquare.h.

{}

Member Function Documentation

double DecayTreeFitter::ChiSquare::chi2 ( ) const

inline

Retrieve const chi square.

Definition at line 46 of file ChiSquare.h.

References m_chi2.

{ return m_chi2 ; }

double DecayTreeFitter::ChiSquare::chi2PerDoF ( ) const

inline

return chi2/ndof if ndof>0. returns zero otherwise.

Definition at line 31 of file ChiSquare.h.

References m_chi2, and m_nDoF.

{ return m_nDoF>0 ? m_chi2/m_nDoF : 0 ; }

int DecayTreeFitter::ChiSquare::nDoF ( ) const

inline

Retrieve const number of degrees of freedom.

Definition at line 49 of file ChiSquare.h.

References m_nDoF.

{ return m_nDoF ; }

ChiSquare DecayTreeFitter::ChiSquare::operator+ ( const ChiSquare &  rhs )

inline

addition operator

Definition at line 80 of file ChiSquare.h.

  {
    ChiSquare rc = *this ;
    rc += rhs ;
    return rc ;
  }

ChiSquare & DecayTreeFitter::ChiSquare::operator+= ( const ChiSquare &  rhs )

inline

addition operator

Definition at line 66 of file ChiSquare.h.

References m_chi2, and m_nDoF.

  {
    m_chi2 += rhs.m_chi2 ;
    m_nDoF += rhs.m_nDoF ;
    return *this ;
  }

ChiSquare DecayTreeFitter::ChiSquare::operator- ( const ChiSquare &  rhs )

inline

subtraction operator

Definition at line 87 of file ChiSquare.h.

  {
    ChiSquare rc = *this ;
    rc -= rhs ;
    return rc ;
  }

ChiSquare & DecayTreeFitter::ChiSquare::operator-= ( const ChiSquare &  rhs )

inline

subtraction operator

Definition at line 73 of file ChiSquare.h.

References m_chi2, and m_nDoF.

  {
    m_chi2 -= rhs.m_chi2 ;
    m_nDoF -= rhs.m_nDoF ;
    return *this ;
  }

double DecayTreeFitter::ChiSquare::prob ( ) const

inline

Get Cofidence level.

Definition at line 52 of file ChiSquare.h.

References m_chi2, and m_nDoF.

{ return TMath::Prob(m_chi2,m_nDoF) ; }

Member Data Documentation

double DecayTreeFitter::ChiSquare::m_chi2

private

chi square

Definition at line 59 of file ChiSquare.h.

Referenced by chi2(), chi2PerDoF(), operator+=(), operator-=(), and prob().

int DecayTreeFitter::ChiSquare::m_nDoF

private

number of degrees of freedom

Definition at line 60 of file ChiSquare.h.

Referenced by chi2PerDoF(), nDoF(), operator+=(), operator-=(), and prob().

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

• ChiSquare.h