fastjet::cms::NumericSafeGreaterByEt< T > Struct Template Reference

#include <SortByEt.h>

List of all members.

Public Types
typedef T	first_argument_type
typedef T	second_argument_type
Public Member Functions
bool	operator() (const T &a1, const T &a2)

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Detailed Description

template<class T>
struct fastjet::cms::NumericSafeGreaterByEt< T >

Definition at line 34 of file SortByEt.h.

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Member Typedef Documentation

template<class T>

typedef T fastjet::cms::NumericSafeGreaterByEt< T >::first_argument_type

Definition at line 35 of file SortByEt.h.

template<class T>

typedef T fastjet::cms::NumericSafeGreaterByEt< T >::second_argument_type

Definition at line 36 of file SortByEt.h.

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Member Function Documentation

template<class T>

bool fastjet::cms::NumericSafeGreaterByEt< T >::operator()	(	const T &	a1,
		const T &	a2
	)		[inline]

Definition at line 37 of file SortByEt.h.

                                            {
    // FastJet::PseudoJet does not provide a direct access to Et2
    // Plus, we want it to be computed in the same way as in the CMS
    // code (actually the Root code that is used by CMS)
    double et1 = a1.Et();
    double et2 = a2.Et();

    // now we can come back to the CMS code
    return
      fabs (et1-et2) > std::numeric_limits<double>::epsilon() ? et1 > et2 :
      fabs (a1.px()-a2.px()) > std::numeric_limits<double>::epsilon() ? a1.px() > a2.px() :
      a1.pz() > a2.pz();
  }

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

• plugins/CMSIterativeCone/SortByEt.h