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25 // 25 //
26 // G4PhysicsLogVector class implementation <<
27 // 26 //
28 // Authors: << 27 // $Id$
29 // - 02 Dec. 1995, G.Cosmo: Structure created << 28 //
30 // - 03 Mar. 1996, K.Amako: Implemented the 1s << 29 //
31 // Revisions: << 30 // --------------------------------------------------------------
32 // - 11 Nov. 2000, H.Kurashige : Use STL vecto << 31 // GEANT 4 class implementation file
33 // ------------------------------------------- << 32 //
>> 33 // G4PhysicsLogVector.cc
>> 34 //
>> 35 // History:
>> 36 // 02 Dec. 1995, G.Cosmo : Structure created based on object model
>> 37 // 15 Feb. 1996, K.Amako : Implemented the 1st version
>> 38 // 01 Jul. 1996, K.Amako : Hidden bin from the user introduced
>> 39 // 26 Sep. 1996, K.Amako : Constructor with only 'bin size' added
>> 40 // 11 Nov. 2000, H.Kurashige : use STL vector for dataVector and binVector
>> 41 // 9 Mar. 2001, H.Kurashige : added PhysicsVector type and Retrieve
>> 42 // 05 Sep. 2008, V.Ivanchenko : added protections for zero-length vector
>> 43 // 19 Jun. 2009, V.Ivanchenko : removed hidden bin
>> 44 //
>> 45 // --------------------------------------------------------------
34 46
35 #include "G4PhysicsLogVector.hh" 47 #include "G4PhysicsLogVector.hh"
36 #include "G4Exp.hh" <<
37 #include "G4Log.hh" <<
38 48
39 // ------------------------------------------- << 49 G4PhysicsLogVector::G4PhysicsLogVector()
40 G4PhysicsLogVector::G4PhysicsLogVector(G4bool << 50 : G4PhysicsVector()
41 : G4PhysicsVector(spline) << 51 {
42 { <<
43 type = T_G4PhysicsLogVector; 52 type = T_G4PhysicsLogVector;
44 } 53 }
45 54
46 // ------------------------------------------- << 55 G4PhysicsLogVector::G4PhysicsLogVector(size_t theNbin)
47 G4PhysicsLogVector::G4PhysicsLogVector(G4doubl << 56 : G4PhysicsVector()
48 std::si <<
49 : G4PhysicsVector(spline) <<
50 { 57 {
51 numberOfNodes = Nbin + 1; << 58 type = T_G4PhysicsLogVector;
52 if (Nbin < 2 || Emin >= Emax || Emin <= 0.0) << 59
53 { << 60 numberOfNodes = theNbin + 1;
54 G4ExceptionDescription ed; << 61 dataVector.reserve(numberOfNodes);
55 ed << "G4PhysicsLogVector with wrong param << 62 binVector.reserve(numberOfNodes);
56 << " Emin= " << Emin << " Emax= " << Em << 63
57 G4Exception("G4PhysicsLogVector::G4Physics << 64 for (size_t i=0; i<numberOfNodes; i++)
58 FatalException, ed, "Nbins sho <<
59 } <<
60 if (numberOfNodes < 3) <<
61 { 65 {
62 numberOfNodes = 3; << 66 binVector.push_back(0.0);
>> 67 dataVector.push_back(0.0);
63 } 68 }
>> 69 }
>> 70
>> 71 G4PhysicsLogVector::G4PhysicsLogVector(G4double theEmin,
>> 72 G4double theEmax, size_t theNbin)
>> 73 : G4PhysicsVector()
>> 74 {
64 type = T_G4PhysicsLogVector; 75 type = T_G4PhysicsLogVector;
65 76
66 binVector.resize(numberOfNodes); << 77 dBin = std::log10(theEmax/theEmin)/theNbin;
67 dataVector.resize(numberOfNodes, 0.0); << 78 baseBin = std::log10(theEmin)/dBin;
68 binVector[0] = Emin; <<
69 binVector[numberOfNodes - 1] = Emax; <<
70 Initialise(); <<
71 79
72 for (std::size_t i = 1; i <= idxmax; ++i) << 80 numberOfNodes = theNbin + 1;
>> 81 dataVector.reserve(numberOfNodes);
>> 82 binVector.reserve(numberOfNodes);
>> 83 static const G4double g4log10 = std::log(10.);
>> 84
>> 85 binVector.push_back(theEmin);
>> 86 dataVector.push_back(0.0);
>> 87
>> 88 for (size_t i=1; i<numberOfNodes-1; i++)
>> 89 {
>> 90 binVector.push_back(std::exp(g4log10*(baseBin+i)*dBin));
>> 91 dataVector.push_back(0.0);
>> 92 }
>> 93 binVector.push_back(theEmax);
>> 94 dataVector.push_back(0.0);
>> 95
>> 96 edgeMin = binVector[0];
>> 97 edgeMax = binVector[numberOfNodes-1];
>> 98 }
>> 99
>> 100 G4PhysicsLogVector::~G4PhysicsLogVector()
>> 101 {
>> 102 }
>> 103
>> 104 G4bool G4PhysicsLogVector::Retrieve(std::ifstream& fIn, G4bool ascii)
>> 105 {
>> 106 G4bool success = G4PhysicsVector::Retrieve(fIn, ascii);
>> 107 if (success)
73 { 108 {
74 binVector[i] = edgeMin*G4Exp(i / invdBin); << 109 G4double theEmin = binVector[0];
>> 110 dBin = std::log10(binVector[1]/theEmin);
>> 111 baseBin = std::log10(theEmin)/dBin;
75 } 112 }
>> 113 return success;
76 } 114 }
77 115
78 // ------------------------------------------- << 116 void G4PhysicsLogVector::ScaleVector(G4double factorE, G4double factorV)
79 void G4PhysicsLogVector::Initialise() <<
80 { 117 {
81 idxmax = numberOfNodes - 2; << 118 G4PhysicsVector::ScaleVector(factorE, factorV);
82 edgeMin = binVector[0]; << 119 G4double theEmin = binVector[0];
83 edgeMax = binVector[idxmax + 1]; << 120 dBin = std::log10(binVector[1]/theEmin);
84 invdBin = (idxmax + 1) / G4Log(edgeMax/edgeM << 121 baseBin = std::log10(theEmin)/dBin;
85 logemin = G4Log(edgeMin); << 122 }
>> 123
>> 124 size_t G4PhysicsLogVector::FindBinLocation(G4double theEnergy) const
>> 125 {
>> 126 // For G4PhysicsLogVector, FindBinLocation is implemented using
>> 127 // a simple arithmetic calculation.
>> 128 //
>> 129 // Because this is a virtual function, it is accessed through a
>> 130 // pointer to the G4PhyiscsVector object for most usages. In this
>> 131 // case, 'inline' will not be invoked. However, there is a possibility
>> 132 // that the user access to the G4PhysicsLogVector object directly and
>> 133 // not through pointers or references. In this case, the 'inline' will
>> 134 // be invoked. (See R.B.Murray, "C++ Strategies and Tactics", Chap.6.6)
>> 135 //G4cout << "G4PhysicsLogVector::FindBinLocation: e= " << theEnergy
>> 136
>> 137 return size_t( std::log10(theEnergy)/dBin - baseBin );
86 } 138 }
87 139
88 // ------------------------------------------- <<
89 140