1 | // |
---|
2 | // ******************************************************************** |
---|
3 | // * License and Disclaimer * |
---|
4 | // * * |
---|
5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
7 | // * conditions of the Geant4 Software License, included in the file * |
---|
8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
9 | // * include a list of copyright holders. * |
---|
10 | // * * |
---|
11 | // * Neither the authors of this software system, nor their employing * |
---|
12 | // * institutes,nor the agencies providing financial support for this * |
---|
13 | // * work make any representation or warranty, express or implied, * |
---|
14 | // * regarding this software system or assume any liability for its * |
---|
15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
16 | // * for the full disclaimer and the limitation of liability. * |
---|
17 | // * * |
---|
18 | // * This code implementation is the result of the scientific and * |
---|
19 | // * technical work of the GEANT4 collaboration. * |
---|
20 | // * By using, copying, modifying or distributing the software (or * |
---|
21 | // * any work based on the software) you agree to acknowledge its * |
---|
22 | // * use in resulting scientific publications, and indicate your * |
---|
23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
24 | // ******************************************************************** |
---|
25 | // |
---|
26 | // $Id: G4CrossSectionExcitationBornPartial.cc,v 1.4 2009/06/10 13:32:36 mantero Exp $ |
---|
27 | // GEANT4 tag $Name: geant4-09-03 $ |
---|
28 | |
---|
29 | #include "G4CrossSectionExcitationBornPartial.hh" |
---|
30 | |
---|
31 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
32 | |
---|
33 | G4CrossSectionExcitationBornPartial::G4CrossSectionExcitationBornPartial() |
---|
34 | { |
---|
35 | table = 0; |
---|
36 | } |
---|
37 | |
---|
38 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
39 | |
---|
40 | G4CrossSectionExcitationBornPartial::~G4CrossSectionExcitationBornPartial() |
---|
41 | { |
---|
42 | delete table; |
---|
43 | } |
---|
44 | |
---|
45 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo...... |
---|
46 | |
---|
47 | G4int G4CrossSectionExcitationBornPartial::RandomSelect(G4double k) |
---|
48 | { |
---|
49 | G4int level = 0; |
---|
50 | |
---|
51 | if (table == 0) |
---|
52 | { |
---|
53 | table = new G4DNACrossSectionDataSet(new G4LogLogInterpolation, eV,(1e-22/3.343)*m*m ); |
---|
54 | table->LoadData("dna/sigma_excitation_p_born"); |
---|
55 | } |
---|
56 | |
---|
57 | G4double* valuesBuffer = new G4double[table->NumberOfComponents()]; |
---|
58 | |
---|
59 | const size_t n(table->NumberOfComponents()); |
---|
60 | size_t i(n); |
---|
61 | G4double value = 0.; |
---|
62 | |
---|
63 | while (i>0) |
---|
64 | { |
---|
65 | i--; |
---|
66 | valuesBuffer[i] = table->GetComponent(i)->FindValue(k); |
---|
67 | value += valuesBuffer[i]; |
---|
68 | } |
---|
69 | |
---|
70 | value *= G4UniformRand(); |
---|
71 | |
---|
72 | i = n; |
---|
73 | |
---|
74 | while (i > 0) |
---|
75 | { |
---|
76 | i--; |
---|
77 | |
---|
78 | if (valuesBuffer[i] > value) |
---|
79 | { |
---|
80 | delete[] valuesBuffer; |
---|
81 | return i; |
---|
82 | } |
---|
83 | value -= valuesBuffer[i]; |
---|
84 | } |
---|
85 | |
---|
86 | if (valuesBuffer) delete[] valuesBuffer; |
---|
87 | |
---|
88 | return level; |
---|
89 | } |
---|
90 | |
---|