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 ()
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
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.)

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

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 20 of file EvtPdfSum.hh.

Constructor & Destructor Documentation

EvtPdfSum() [1/2]

template<class T>

EvtPdfSum< T >::EvtPdfSum ( )

inline

Definition at line 22 of file EvtPdfSum.hh.

{}

Referenced by clone(), and EvtPdfSum().

EvtPdfSum() [2/2]

template<class T>

EvtPdfSum< T >::EvtPdfSum

(

const EvtPdfSum< T > &

other

)

Definition at line 59 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 68 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 );
  }

addTerm()

template<class T>

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

inline

Definition at line 29 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 42 of file EvtPdfSum.hh.

{ return _c[i]; }

Referenced by addOwnedTerm(), and addTerm().

clone()

template<class T>

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

inlinevirtual

Implements EvtPdf< T >.

Definition at line 25 of file EvtPdfSum.hh.

{ return new EvtPdfSum( *this ); }

compute_integral() [1/2]

template<class T>

EvtValError EvtPdfSum< T >::compute_integral ( ) const

virtual

Reimplemented from EvtPdf< T >.

Definition at line 84 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;
}

Referenced by randomPoint().

compute_integral() [2/2]

template<class T>

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

virtual

Reimplemented from EvtPdf< T >.

Definition at line 91 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 43 of file EvtPdfSum.hh.

{ return _term[i]; }

nTerms()

template<class T>

int EvtPdfSum< T >::nTerms ( ) const

inline

Definition at line 40 of file EvtPdfSum.hh.

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

Referenced by compute_integral(), compute_integral(), and randomPoint().

pdf()

template<class T>

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

protectedvirtual

Implements EvtPdf< T >.

Definition at line 73 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 addOwnedTerm(), and addTerm().

randomPoint()

template<class T>

T EvtPdfSum< T >::randomPoint ( )

virtual

Reimplemented from EvtPdf< T >.

Definition at line 104 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 addOwnedTerm(), addTerm(), c(), compute_integral(), compute_integral(), EvtPdfSum(), pdf(), randomPoint(), and ~EvtPdfSum().

_itg

template<class T>

EvtValError EvtPdfSum< T >::_itg

mutableprotected

Definition at line 56 of file EvtPdfSum.hh.

Referenced by randomPoint().

_term

template<class T>

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

protected

Definition at line 55 of file EvtPdfSum.hh.

Referenced by addOwnedTerm(), addTerm(), compute_integral(), compute_integral(), EvtPdfSum(), getPdf(), nTerms(), pdf(), randomPoint(), and ~EvtPdfSum().

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

• EvtPdfSum.hh