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File indexing completed on 2025-02-17 10:01:03
0001 // ---------------------------------------------------------------------- 0002 // 0003 // ParticleDataTableComparison.hh 0004 // Author: Lynn Garren 0005 // 0006 // ---------------------------------------------------------------------- 0007 #ifndef ParticleDataTableComparison_HH 0008 #define ParticleDataTableComparison_HH 0009 0010 #include "HepPDT/ParticleID.hh" 0011 0012 namespace HepPDT { 0013 0014 //! The ParticleDataTableComparison class provides a utility for sorting the PDT. 0015 0016 /// 0017 /// \class ParticleDataTableComparison 0018 /// \author Lynn Garren 0019 /// 0020 /// Sort the PDT by absolute value of the particle ID. 0021 /// If the absolute values are equal, the positive number comes first. 0022 /// 0023 class ParticleDataTableComparison { 0024 0025 public: 0026 /// stateless class 0027 ParticleDataTableComparison( ) {;} 0028 0029 /// Comparison method sorts by absolute value. 0030 /// If the absolute values are the same, the positive entry comes first. 0031 inline bool operator() ( const ParticleID&, const ParticleID & ) const; 0032 0033 }; // ParticleDataTableComparison 0034 0035 0036 bool ParticleDataTableComparison::operator() ( const ParticleID& p1, const ParticleID & p2 ) const 0037 { 0038 if( p1.abspid() == p2.abspid() ) { 0039 return p2.pid() < p1.pid(); 0040 } 0041 return p1.abspid() < p2.abspid(); 0042 } 0043 0044 0045 } // HepPDT 0046 0047 #endif // ParticleDataTableComparison_HH
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