EvtPdfSum< T > Class Template Reference

#include <EvtPdfSum.hh>

Inheritance diagram for EvtPdfSum< T >:

Public Member Functions
	EvtPdfSum ()
	EvtPdfSum (const EvtPdfSum< T > &other)
virtual	~EvtPdfSum ()
virtual EvtPdf< T > *	clone () const
void	addTerm (double c, const EvtPdf< T > &pdf)
void	addOwnedTerm (double c, EvtPdf< T > *pdf)
int	nTerms () const
double	c (int i) const
EvtPdf< T > *	getPdf (int i) const
virtual EvtValError	compute_integral () const
virtual EvtValError	compute_integral (int N) const
virtual T	randomPoint ()
Public Member Functions inherited from EvtPdf< T >
	EvtPdf ()
	EvtPdf (const EvtPdf &other)
virtual	~EvtPdf ()
virtual EvtPdf< T > *	clone () const =0
double	evaluate (const T &p) const
EvtPdfMax< T >	findMax (const EvtPdf< T > &pc, int N)
EvtValError	findGenEff (const EvtPdf< T > &pc, int N, int nFindMax)
void	setItg (EvtValError itg)
EvtValError	getItg () const
EvtValError	getItg (int N) const
virtual EvtValError	compute_integral () const
virtual EvtValError	compute_integral (int N) const
EvtValError	compute_mc_integral (const EvtPdf< T > &pc, int N)
EvtPredGen< EvtPdfGen< T >, EvtPdfPred< T > >	accRejGen (const EvtPdf< T > &pc, int nMax, double factor=1.)
virtual T	randomPoint ()

Protected Member Functions
virtual double	pdf (const T &p) const
virtual double	pdf (const T &) const =0

Protected Attributes
vector< double >	_c
vector< EvtPdf< T > * >	_term
EvtValError	_itg
Protected Attributes inherited from EvtPdf< T >
EvtValError	_itg

Detailed Description

template<class T>
class EvtPdfSum< T >

Definition at line 21 of file EvtPdfSum.hh.

Constructor & Destructor Documentation

EvtPdfSum() [1/2]

template<class T >

EvtPdfSum< T >::EvtPdfSum ( )

inline

Definition at line 24 of file EvtPdfSum.hh.

{}

Referenced by EvtPdfSum< T >::clone().

EvtPdfSum() [2/2]

template<class T >

EvtPdfSum< T >::EvtPdfSum

(

const EvtPdfSum< T > &

other

)

Definition at line 61 of file EvtPdfSum.hh.

  : EvtPdf<T>(other)
{
  int i;
  for(i = 0; i < other.nTerms(); i++) {
    _c.push_back(other._c[i]);
    _term.push_back(other._term[i]->clone());
  }
}

~EvtPdfSum()

template<class T >

EvtPdfSum< T >::~EvtPdfSum

virtual

Definition at line 72 of file EvtPdfSum.hh.

{
  int i;
  for(i = 0; i < _c.size(); i++) delete _term[i];
}

Member Function Documentation

addOwnedTerm()

template<class T >

void EvtPdfSum< T >::addOwnedTerm ( double  c, EvtPdf< T > *  pdf  )

inline

Definition at line 35 of file EvtPdfSum.hh.

  { _c.push_back(c); _term.push_back(pdf); }

Referenced by EvtPto3PAmpFactory::processAmp().

addTerm()

template<class T >

void EvtPdfSum< T >::addTerm ( double  c, const EvtPdf< T > &  pdf  )

inline

Definition at line 32 of file EvtPdfSum.hh.

  { assert(c >= 0.); _c.push_back(c); _term.push_back(pdf.clone()); }

Referenced by EvtBtoKD3P::decay().

c()

template<class T >

double EvtPdfSum< T >::c ( int  i ) const

inline

Definition at line 40 of file EvtPdfSum.hh.

{ return _c[i]; }

Referenced by EvtPdfSum< T >::addOwnedTerm(), and EvtPdfSum< T >::addTerm().

clone()

template<class T >

virtual EvtPdf< T > * EvtPdfSum< T >::clone ( ) const

inlinevirtual

Implements EvtPdf< T >.

Definition at line 27 of file EvtPdfSum.hh.

{ return new EvtPdfSum(*this); }

compute_integral() [1/2]

template<class T >

EvtValError EvtPdfSum< T >::compute_integral

virtual

Reimplemented from EvtPdf< T >.

Definition at line 93 of file EvtPdfSum.hh.

{
  int i;
  EvtValError itg(0.0,0.0);
  for(i=0;i<nTerms();i++) itg += _c[i]*_term[i]->getItg();
  return itg;
}

compute_integral() [2/2]

template<class T >

EvtValError EvtPdfSum< T >::compute_integral ( int  N ) const

virtual

Reimplemented from EvtPdf< T >.

Definition at line 102 of file EvtPdfSum.hh.

{
  int i;
  EvtValError itg(0.0,0.0);
  for(i=0;i<nTerms();i++) itg += _c[i]*_term[i]->getItg(N);
  return itg;
}

getPdf()

template<class T >

EvtPdf< T > * EvtPdfSum< T >::getPdf ( int  i ) const

inline

Definition at line 41 of file EvtPdfSum.hh.

{ return _term[i]; }

nTerms()

template<class T >

int EvtPdfSum< T >::nTerms ( ) const

inline

Definition at line 38 of file EvtPdfSum.hh.

{ return _term.size(); }  // number of terms

pdf()

template<class T >

double EvtPdfSum< T >::pdf ( const T &  p ) const

protectedvirtual

Implements EvtPdf< T >.

Definition at line 80 of file EvtPdfSum.hh.

{
  double ret = 0.;
  unsigned i;
  for(i=0; i < _c.size(); i++) ret += _c[i] * _term[i]->evaluate(p);
  return ret;
}

Referenced by EvtPdfSum< T >::addOwnedTerm(), and EvtPdfSum< T >::addTerm().

randomPoint()

template<class T >

T EvtPdfSum< T >::randomPoint

virtual

Reimplemented from EvtPdf< T >.

Definition at line 118 of file EvtPdfSum.hh.

{
  if(!_itg.valueKnown()) _itg = compute_integral();      
  
  double max = _itg.value();
  double rnd = EvtRandom::Flat(0,max);
  
  double sum = 0.;
  int i;
  for(i = 0; i < nTerms(); i++) {
    double itg = _term[i]->getItg().value();
    sum += _c[i] * itg;
    if(sum > rnd) break;
  }
  
  return _term[i]->randomPoint(); 
}

Referenced by EvtBtoKD3P::decay(), and EvtIntervalDecayAmp< T >::decay().

Member Data Documentation

_c

template<class T >

vector<double> EvtPdfSum< T >::_c

protected

Definition at line 54 of file EvtPdfSum.hh.

Referenced by EvtPdfSum< T >::addOwnedTerm(), EvtPdfSum< T >::addTerm(), EvtPdfSum< T >::c(), and EvtPdfSum< T >::EvtPdfSum().

_itg

template<class T >

EvtValError EvtPdfSum< T >::_itg

mutableprotected

Definition at line 56 of file EvtPdfSum.hh.

_term

template<class T >

vector<EvtPdf<T>*> EvtPdfSum< T >::_term

protected

Definition at line 55 of file EvtPdfSum.hh.

Referenced by EvtPdfSum< T >::addOwnedTerm(), EvtPdfSum< T >::addTerm(), EvtPdfSum< T >::EvtPdfSum(), EvtPdfSum< T >::getPdf(), and EvtPdfSum< T >::nTerms().

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

• EvtPdfSum.hh