NumericSafeLessByPt< T > Struct Template Reference

#include <PtComparator.h>

Public Types
typedef T	first_argument_type
typedef T	second_argument_type

Public Member Functions
bool	operator() (const T &a1, const T &a2)

Detailed Description

template<class T>
struct NumericSafeLessByPt< T >

Definition at line 34 of file PtComparator.h.

Member Typedef Documentation

first_argument_type

template<class T >

typedef T NumericSafeLessByPt< T >::first_argument_type

Definition at line 35 of file PtComparator.h.

second_argument_type

template<class T >

typedef T NumericSafeLessByPt< T >::second_argument_type

Definition at line 36 of file PtComparator.h.

Member Function Documentation

operator()()

template<class T >

bool NumericSafeLessByPt< T >::operator() ( const T &  a1, const T &  a2  )

inline

Definition at line 37 of file PtComparator.h.

                                            {
    return fabs(a1.pt() - a2.pt()) > std::numeric_limits<double>::epsilon()   ? a1.pt() < a2.pt()
           : fabs(a1.px() - a2.px()) > std::numeric_limits<double>::epsilon() ? a1.px() < a2.px()
                                                                              : a1.pz() < a2.pz();
  }

References testProducerWithPsetDescEmpty_cfi::a2, and geometryDiff::epsilon.