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1 // 1 //
2 // ******************************************* 2 // ********************************************************************
3 // * License and Disclaimer << 3 // * DISCLAIMER *
4 // * 4 // * *
5 // * The Geant4 software is copyright of th << 5 // * The following disclaimer summarizes all the specific disclaimers *
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9 // * include a list of copyright holders. <<
10 // * 9 // * *
11 // * Neither the authors of this software syst 10 // * Neither the authors of this software system, nor their employing *
12 // * institutes,nor the agencies providing fin 11 // * institutes,nor the agencies providing financial support for this *
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15 // * use. Please see the license in the file << 14 // * use. *
16 // * for the full disclaimer and the limitatio <<
17 // * 15 // * *
18 // * This code implementation is the result << 16 // * This code implementation is the intellectual property of the *
19 // * technical work of the GEANT4 collaboratio << 17 // * GEANT4 collaboration. *
20 // * By using, copying, modifying or distri << 18 // * By copying, distributing or modifying the Program (or any work *
21 // * any work based on the software) you ag << 19 // * based on the Program) you indicate your acceptance of this *
22 // * use in resulting scientific publicati << 20 // * statement, and all its terms. *
23 // * acceptance of all terms of the Geant4 Sof <<
24 // ******************************************* 21 // ********************************************************************
25 // 22 //
26 // G4HelixImplicitEuler << 23 //
>> 24 // $Id: G4HelixImplicitEuler.hh,v 1.6 2001/07/11 09:59:08 gunter Exp $
>> 25 // GEANT4 tag $Name: geant4-05-02-patch-01 $
>> 26 //
>> 27 //
>> 28 // class G4HelixImplicitEuler
27 // 29 //
28 // Class description: 30 // Class description:
29 // 31 //
30 // Helix Implicit Euler stepper for magnetic << 32 // Helix Implicit Euler:
31 // x_1 = x_0 + 1/2 * ( helix(h,t_0,x_0) 33 // x_1 = x_0 + 1/2 * ( helix(h,t_0,x_0)
32 // + helix(h,t_0+h,x_ 34 // + helix(h,t_0+h,x_0+helix(h,t0,x0) ) )
33 // Second order solver. <<
34 // Take the current derivative and add it to <<
35 // Take the output and its derivative. Add th <<
36 // to form the final output. <<
37 35
38 // Author: W.Wander <wwc@mit.edu>, 03/11/1998 << 36 // History:
39 // ------------------------------------------- << 37 // - Created. W.Wander <wwc@mit.edu>, 03/11/98
>> 38
40 #ifndef G4HELIXIMPLICITEULER_HH 39 #ifndef G4HELIXIMPLICITEULER_HH
41 #define G4HELIXIMPLICITEULER_HH 40 #define G4HELIXIMPLICITEULER_HH
42 41
43 #include "G4MagHelicalStepper.hh" 42 #include "G4MagHelicalStepper.hh"
44 43
45 class G4HelixImplicitEuler : public G4MagHelic 44 class G4HelixImplicitEuler : public G4MagHelicalStepper
46 { 45 {
47 public: <<
48 46
49 G4HelixImplicitEuler(G4Mag_EqRhs *EqRhs); << 47 public: // with description
50 ~G4HelixImplicitEuler() override; << 48
>> 49 G4HelixImplicitEuler(G4Mag_EqRhs *EqRhs)
>> 50 : G4MagHelicalStepper(EqRhs) {;}
>> 51
>> 52 ~G4HelixImplicitEuler() {;}
51 53
52 void DumbStepper( const G4double y[], 54 void DumbStepper( const G4double y[],
53 G4ThreeVector Bfld << 55 G4ThreeVector Bfld,
54 G4double h, << 56 G4double h,
55 G4double yout << 57 G4double yout[]);
56 58
57 inline G4int IntegratorOrder() const overr << 59 public: // without description
>> 60
>> 61 G4int IntegratorOrder() const { return 2; }
58 }; 62 };
59 63
60 #endif << 64 #endif /* G4HELIXIMPLICITEULER_HH */
61 65