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 | // $Id: G4FastVector.hh,v 1.5 2006/06/29 19:01:48 gunter Exp $ |
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28 | // GEANT4 tag $Name: $ |
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29 | // |
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30 | // |
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31 | // ------------------------------------------------------------ |
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32 | // GEANT 4 class header file |
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33 | // |
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34 | // History: first implementation, based on object model of |
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35 | // 2nd December 1995, G.Cosmo |
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36 | // ------------------------------------------------------------ |
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37 | |
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38 | #ifndef G4FastVector_h |
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39 | #define G4FastVector_h 1 |
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40 | |
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41 | #include "globals.hh" |
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42 | |
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43 | template <class Type, G4int N> |
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44 | class G4FastVector |
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45 | { |
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46 | // Template class defining a vector of pointers, |
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47 | // not performing boundary checking. |
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48 | |
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49 | public: |
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50 | |
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51 | G4FastVector() { ptr = &theArray[0]; } |
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52 | |
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53 | ~G4FastVector() |
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54 | { |
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55 | if (ptr != &theArray[0]) delete [] ptr; |
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56 | } |
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57 | |
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58 | inline Type* operator[](G4int anIndex) const |
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59 | // Access operator to the array. |
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60 | { |
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61 | return ptr[anIndex]; |
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62 | } |
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63 | |
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64 | void Initialize(G4int items) |
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65 | // Normally the pointer ptr points to the stack-array |
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66 | // theArray; only when the number of items is greater |
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67 | // than N, memory is allocated dynamically. |
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68 | { |
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69 | if (ptr != &theArray[0]) |
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70 | delete [] ptr; |
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71 | if (items > N) |
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72 | ptr = new Type*[items]; |
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73 | else |
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74 | ptr = &theArray[0]; |
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75 | } |
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76 | |
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77 | inline void SetElement(G4int anIndex, Type *anElement) |
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78 | // To insert an element at the given position inside |
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79 | // the vector. |
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80 | { |
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81 | ptr[anIndex] = anElement; |
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82 | } |
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83 | |
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84 | private: |
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85 | |
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86 | Type *theArray[N]; |
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87 | Type **ptr; |
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88 | }; |
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89 | |
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90 | #endif |
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91 | |
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