| # Gaudi Framework, version v23r0 |

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Public Member Functions | Private Attributes

# FindByMassRange Class Reference

The function object must be derived from std::unary_function< IParticlePropertySvc::value_type ,bool > IParticlePropertySvc::value_type is a typedef that defines the internal service storage type that is returned when an iterator is dereferenced. More...

`#include <GaudiKernel/FindByMassRange.h>`

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List of all members.

## Public Member Functions
| FindByMassRange (double low, double high)
| Constructor - sets the mass range in Gev.
bool | operator() (const ParticleProperty *pp) const
| This routine check to see if the mass of a particle lies within the given mass range and returns true if it does.
## Private Attributes
double | m_low
| Low and high mass range (GeV)
double | m_high

## Detailed Description

The function object must be derived from std::unary_function< IParticlePropertySvc::value_type ,bool > IParticlePropertySvc::value_type is a typedef that defines the internal service storage type that is returned when an iterator is dereferenced.

In this case it corresponds to pair< std::string, ParticleProperty* > as the ParticlePropertySvc stores all its data in a map. The string will be the map's key (usually the particle name) and the pointer is a pointer to the ParticleProperty object. The bool template argument states that operator() returns true or false.

The data is accessed in the following manner: const IParticlePropertySvc::value_type& pp_ref; std::string key = pp_ref.first; ParticleProperty* pp = pp_ref.second;

Author:
  Ian Last

Definition at line 31 of file FindByMassRange.h.

## Constructor & Destructor Documentation

FindByMassRange::FindByMassRange | ( | double | low,
|  | double | high
| ) |  | `[inline]`

Constructor - sets the mass range in Gev.

Definition at line 36 of file FindByMassRange.h.

    : m_low( low ), m_high( high ) { }

## Member Function Documentation

bool FindByMassRange::operator() | ( | const ParticleProperty * | pp ) | const`[inline]`

This routine check to see if the mass of a particle lies within the given mass range and returns true if it does.

Definition at line 41 of file FindByMassRange.h.

                                                                                  {
        bool in_range = false;
        if ( pp ) {
          if ( pp->mass() >= m_low && pp->mass() <= m_high ) {
                  in_range = true;
          }
        }
        return in_range;
      }

## Member Data Documentation

double FindByMassRange::m_high`[private]`

Definition at line 55 of file FindByMassRange.h.

double FindByMassRange::m_low`[private]`

Low and high mass range (GeV)

Definition at line 54 of file FindByMassRange.h.

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

- /afs/cern.ch/sw/Gaudi/releases/GAUDI/GAUDI_v23r0/GaudiKernel/GaudiKernel/FindByMassRange.h

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