00001 // 00002 // ******************************************************************** 00003 // * License and Disclaimer * 00004 // * * 00005 // * The Geant4 software is copyright of the Copyright Holders of * 00006 // * the Geant4 Collaboration. It is provided under the terms and * 00007 // * conditions of the Geant4 Software License, included in the file * 00008 // * LICENSE and available at http://cern.ch/geant4/license . These * 00009 // * include a list of copyright holders. * 00010 // * * 00011 // * Neither the authors of this software system, nor their employing * 00012 // * institutes,nor the agencies providing financial support for this * 00013 // * work make any representation or warranty, express or implied, * 00014 // * regarding this software system or assume any liability for its * 00015 // * use. Please see the license in the file LICENSE and URL above * 00016 // * for the full disclaimer and the limitation of liability. * 00017 // * * 00018 // * This code implementation is the result of the scientific and * 00019 // * technical work of the GEANT4 collaboration. * 00020 // * By using, copying, modifying or distributing the software (or * 00021 // * any work based on the software) you agree to acknowledge its * 00022 // * use in resulting scientific publications, and indicate your * 00023 // * acceptance of all terms of the Geant4 Software license. * 00024 // ******************************************************************** 00025 // 00026 // 00027 // $Id$ 00028 // 00029 // 00030 // -------------------------------------------------------------- 00031 // GEANT 4 class implementation file 00032 // 00033 // G4PhysicsLogVector.cc 00034 // 00035 // History: 00036 // 02 Dec. 1995, G.Cosmo : Structure created based on object model 00037 // 15 Feb. 1996, K.Amako : Implemented the 1st version 00038 // 01 Jul. 1996, K.Amako : Hidden bin from the user introduced 00039 // 26 Sep. 1996, K.Amako : Constructor with only 'bin size' added 00040 // 11 Nov. 2000, H.Kurashige : use STL vector for dataVector and binVector 00041 // 9 Mar. 2001, H.Kurashige : added PhysicsVector type and Retrieve 00042 // 05 Sep. 2008, V.Ivanchenko : added protections for zero-length vector 00043 // 19 Jun. 2009, V.Ivanchenko : removed hidden bin 00044 // 00045 // -------------------------------------------------------------- 00046 00047 #include "G4PhysicsLogVector.hh" 00048 00049 G4PhysicsLogVector::G4PhysicsLogVector() 00050 : G4PhysicsVector() 00051 { 00052 type = T_G4PhysicsLogVector; 00053 } 00054 00055 G4PhysicsLogVector::G4PhysicsLogVector(size_t theNbin) 00056 : G4PhysicsVector() 00057 { 00058 type = T_G4PhysicsLogVector; 00059 00060 numberOfNodes = theNbin + 1; 00061 dataVector.reserve(numberOfNodes); 00062 binVector.reserve(numberOfNodes); 00063 00064 for (size_t i=0; i<numberOfNodes; i++) 00065 { 00066 binVector.push_back(0.0); 00067 dataVector.push_back(0.0); 00068 } 00069 } 00070 00071 G4PhysicsLogVector::G4PhysicsLogVector(G4double theEmin, 00072 G4double theEmax, size_t theNbin) 00073 : G4PhysicsVector() 00074 { 00075 type = T_G4PhysicsLogVector; 00076 00077 dBin = std::log10(theEmax/theEmin)/theNbin; 00078 baseBin = std::log10(theEmin)/dBin; 00079 00080 numberOfNodes = theNbin + 1; 00081 dataVector.reserve(numberOfNodes); 00082 binVector.reserve(numberOfNodes); 00083 static const G4double g4log10 = std::log(10.); 00084 00085 binVector.push_back(theEmin); 00086 dataVector.push_back(0.0); 00087 00088 for (size_t i=1; i<numberOfNodes-1; i++) 00089 { 00090 binVector.push_back(std::exp(g4log10*(baseBin+i)*dBin)); 00091 dataVector.push_back(0.0); 00092 } 00093 binVector.push_back(theEmax); 00094 dataVector.push_back(0.0); 00095 00096 edgeMin = binVector[0]; 00097 edgeMax = binVector[numberOfNodes-1]; 00098 } 00099 00100 G4PhysicsLogVector::~G4PhysicsLogVector() 00101 { 00102 } 00103 00104 G4bool G4PhysicsLogVector::Retrieve(std::ifstream& fIn, G4bool ascii) 00105 { 00106 G4bool success = G4PhysicsVector::Retrieve(fIn, ascii); 00107 if (success) 00108 { 00109 G4double theEmin = binVector[0]; 00110 dBin = std::log10(binVector[1]/theEmin); 00111 baseBin = std::log10(theEmin)/dBin; 00112 } 00113 return success; 00114 } 00115 00116 void G4PhysicsLogVector::ScaleVector(G4double factorE, G4double factorV) 00117 { 00118 G4PhysicsVector::ScaleVector(factorE, factorV); 00119 G4double theEmin = binVector[0]; 00120 dBin = std::log10(binVector[1]/theEmin); 00121 baseBin = std::log10(theEmin)/dBin; 00122 } 00123 00124 size_t G4PhysicsLogVector::FindBinLocation(G4double theEnergy) const 00125 { 00126 // For G4PhysicsLogVector, FindBinLocation is implemented using 00127 // a simple arithmetic calculation. 00128 // 00129 // Because this is a virtual function, it is accessed through a 00130 // pointer to the G4PhyiscsVector object for most usages. In this 00131 // case, 'inline' will not be invoked. However, there is a possibility 00132 // that the user access to the G4PhysicsLogVector object directly and 00133 // not through pointers or references. In this case, the 'inline' will 00134 // be invoked. (See R.B.Murray, "C++ Strategies and Tactics", Chap.6.6) 00135 //G4cout << "G4PhysicsLogVector::FindBinLocation: e= " << theEnergy 00136 00137 return size_t( std::log10(theEnergy)/dBin - baseBin ); 00138 } 00139