[966] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | ///////////////////////////////////////////////////////////////////////////////// |
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| 27 | // Module: G4ContinuousGainOfEnergy.hh |
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| 28 | // Author: L. Desorgher |
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| 29 | // Date: 10 May 2007 |
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| 30 | // Organisation: SpaceIT GmbH |
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| 31 | // Customer: ESA/ESTEC |
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| 32 | ///////////////////////////////////////////////////////////////////////////////// |
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| 33 | // |
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| 34 | // CHANGE HISTORY |
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| 35 | // -------------- |
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| 36 | // ChangeHistory: |
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| 37 | // 10 May 2007 creation by L. Desorgher |
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| 38 | // |
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| 39 | //------------------------------------------------------------- |
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| 40 | // Documentation: |
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| 41 | // Continuous process acting on adjoint particles to compute the continuous gain of energy of charged particels whern they are tracked back! |
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| 42 | // |
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| 43 | #ifndef G4ContinuousGainOfEnergy_h |
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| 44 | #define G4ContinuousGainOfEnergy_h 1 |
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| 45 | |
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| 46 | #include "G4VContinuousProcess.hh" |
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| 47 | #include "globals.hh" |
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| 48 | #include "G4Material.hh" |
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| 49 | #include "G4MaterialCutsCouple.hh" |
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| 50 | #include "G4Track.hh" |
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| 51 | #include "G4UnitsTable.hh" |
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| 52 | #include "G4ParticleChange.hh" |
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| 53 | #include "G4VEnergyLossProcess.hh" |
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| 54 | |
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| 55 | |
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| 56 | class G4Step; |
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| 57 | class G4ParticleDefinition; |
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| 58 | class G4VEmModel; |
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| 59 | class G4VEmFluctuationModel; |
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| 60 | |
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| 61 | |
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| 62 | |
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| 63 | class G4ContinuousGainOfEnergy : public G4VContinuousProcess |
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| 64 | { |
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| 65 | public: |
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| 66 | |
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| 67 | G4ContinuousGainOfEnergy(const G4String& name = "EnergyGain", |
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| 68 | G4ProcessType type = fElectromagnetic); |
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| 69 | |
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| 70 | virtual ~G4ContinuousGainOfEnergy(); |
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| 71 | |
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| 72 | |
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| 73 | protected: |
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| 74 | |
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| 75 | |
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| 76 | //------------------------------------------------------------------------ |
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| 77 | // Methods with standard implementation; may be overwritten if needed |
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| 78 | //------------------------------------------------------------------------ |
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| 79 | protected: |
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| 80 | |
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| 81 | |
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| 82 | virtual G4double GetContinuousStepLimit(const G4Track& track, |
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| 83 | G4double previousStepSize, |
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| 84 | G4double currentMinimumStep, |
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| 85 | G4double& currentSafety); |
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| 86 | |
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| 87 | |
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| 88 | //------------------------------------------------------------------------ |
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| 89 | // Generic methods common to all processes |
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| 90 | //------------------------------------------------------------------------ |
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| 91 | public: |
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| 92 | |
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| 93 | |
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| 94 | |
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| 95 | void PreparePhysicsTable(const G4ParticleDefinition&); |
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| 96 | |
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| 97 | void BuildPhysicsTable(const G4ParticleDefinition&); |
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| 98 | |
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| 99 | |
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| 100 | G4VParticleChange* AlongStepDoIt(const G4Track&, const G4Step&); |
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| 101 | |
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| 102 | |
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| 103 | void SetLossFluctuations(G4bool val); |
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| 104 | inline void SetIsIntegral(G4bool val){is_integral= val;} |
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| 105 | |
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| 106 | inline void SetDirectEnergyLossProcess(G4VEnergyLossProcess* aProcess){theDirectEnergyLossProcess=aProcess;}; |
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| 107 | |
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| 108 | inline void SetDirectParticle(G4ParticleDefinition* p){theDirectPartDef=p;}; |
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| 109 | |
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| 110 | protected: |
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| 111 | |
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| 112 | |
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| 113 | |
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| 114 | |
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| 115 | private: |
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| 116 | |
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| 117 | void DefineMaterial(const G4MaterialCutsCouple* couple); |
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| 118 | |
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| 119 | // hide assignment operator |
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| 120 | |
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| 121 | G4ContinuousGainOfEnergy(G4ContinuousGainOfEnergy &); |
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| 122 | G4ContinuousGainOfEnergy & operator=(const G4ContinuousGainOfEnergy &right); |
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| 123 | |
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| 124 | |
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| 125 | private: |
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| 126 | |
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| 127 | const G4Material* currentMaterial; |
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| 128 | const G4MaterialCutsCouple* currentCouple; |
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| 129 | size_t currentMaterialIndex; |
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| 130 | G4double currentTcut; |
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| 131 | G4double preStepKinEnergy; |
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| 132 | |
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| 133 | |
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| 134 | G4double linLossLimit; |
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| 135 | G4bool lossFluctuationFlag; |
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| 136 | G4bool lossFluctuationArePossible; |
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| 137 | |
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| 138 | G4VEnergyLossProcess* theDirectEnergyLossProcess; |
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| 139 | G4ParticleDefinition* theDirectPartDef; |
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| 140 | |
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| 141 | |
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| 142 | G4bool is_integral; |
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| 143 | |
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| 144 | |
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| 145 | }; |
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| 146 | |
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| 147 | /////////////////////////////////////////////////////// |
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| 148 | // |
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| 149 | inline void G4ContinuousGainOfEnergy::DefineMaterial( |
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| 150 | const G4MaterialCutsCouple* couple) |
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| 151 | { |
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| 152 | if(couple != currentCouple) { |
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| 153 | currentCouple = couple; |
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| 154 | currentMaterial = couple->GetMaterial(); |
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| 155 | currentMaterialIndex = couple->GetIndex(); |
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| 156 | currentTcut = couple->GetProductionCuts()->GetProductionCut(theDirectPartDef->GetParticleName()); |
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| 157 | //G4cout<<"Define Material"<<std::endl; |
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| 158 | //if(!meanFreePath) ResetNumberOfInteractionLengthLeft(); |
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| 159 | } |
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| 160 | } |
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| 161 | /////////////////////////////////////////////////////// |
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| 162 | // |
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| 163 | inline G4double G4ContinuousGainOfEnergy::GetContinuousStepLimit(const G4Track& track, |
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| 164 | G4double , G4double , G4double& ) |
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| 165 | { |
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| 166 | G4double x = DBL_MAX; |
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| 167 | x=.1*mm; |
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| 168 | |
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| 169 | //G4cout<<x<<std::endl; |
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| 170 | DefineMaterial(track.GetMaterialCutsCouple()); |
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| 171 | preStepKinEnergy = track.GetKineticEnergy(); |
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| 172 | G4double maxE=1.2*preStepKinEnergy; |
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| 173 | G4double r = theDirectEnergyLossProcess->GetRange(preStepKinEnergy, currentCouple); |
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| 174 | G4double r1 = theDirectEnergyLossProcess->GetRange(maxE, currentCouple); |
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| 175 | x=std::max(r1-r,.1); |
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| 176 | |
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| 177 | return x; |
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| 178 | |
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| 179 | |
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| 180 | } |
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| 181 | #endif |
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