| [833] | 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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| [1337] | 28 | // GEANT4 tag $Name: geant4-09-04-beta-01 $
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| [833] | 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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