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>> 1 // This code implementation is the intellectual property of
>> 2 // the GEANT4 collaboration.
1 // 3 //
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5 // * The Geant4 software is copyright of th <<
6 // * the Geant4 Collaboration. It is provided <<
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13 // * work make any representation or warran <<
14 // * regarding this software system or assum <<
15 // * use. Please see the license in the file <<
16 // * for the full disclaimer and the limitatio <<
17 // * <<
18 // * This code implementation is the result <<
19 // * technical work of the GEANT4 collaboratio <<
20 // * By using, copying, modifying or distri <<
21 // * any work based on the software) you ag <<
22 // * use in resulting scientific publicati <<
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24 // ******************************************* <<
25 // 7 //
26 // G4HelixImplicitEuler << 8 // $Id: G4HelixImplicitEuler.hh,v 1.5 2000/11/01 15:15:49 gcosmo Exp $
>> 9 // GEANT4 tag $Name: geant4-03-00 $
>> 10 //
>> 11 //
>> 12 // class G4HelixImplicitEuler
27 // 13 //
28 // Class description: 14 // Class description:
29 // 15 //
30 // Helix Implicit Euler stepper for magnetic << 16 // Helix Implicit Euler:
31 // x_1 = x_0 + 1/2 * ( helix(h,t_0,x_0) 17 // x_1 = x_0 + 1/2 * ( helix(h,t_0,x_0)
32 // + helix(h,t_0+h,x_ 18 // + 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 19
38 // Author: W.Wander <wwc@mit.edu>, 03/11/1998 << 20 // History:
39 // ------------------------------------------- << 21 // - Created. W.Wander <wwc@mit.edu>, 03/11/98
>> 22
40 #ifndef G4HELIXIMPLICITEULER_HH 23 #ifndef G4HELIXIMPLICITEULER_HH
41 #define G4HELIXIMPLICITEULER_HH 24 #define G4HELIXIMPLICITEULER_HH
42 25
43 #include "G4MagHelicalStepper.hh" 26 #include "G4MagHelicalStepper.hh"
44 27
45 class G4HelixImplicitEuler : public G4MagHelic 28 class G4HelixImplicitEuler : public G4MagHelicalStepper
46 { 29 {
47 public: <<
48 30
49 G4HelixImplicitEuler(G4Mag_EqRhs *EqRhs); << 31 public: // with description
50 ~G4HelixImplicitEuler() override; << 32
>> 33 G4HelixImplicitEuler(G4Mag_EqRhs *EqRhs)
>> 34 : G4MagHelicalStepper(EqRhs) {;}
>> 35
>> 36 ~G4HelixImplicitEuler() {;}
51 37
52 void DumbStepper( const G4double y[], 38 void DumbStepper( const G4double y[],
53 G4ThreeVector Bfld << 39 G4ThreeVector Bfld,
54 G4double h, << 40 G4double h,
55 G4double yout << 41 G4double yout[]);
56 42
57 inline G4int IntegratorOrder() const overr << 43 public: // without description
>> 44
>> 45 G4int IntegratorOrder() const { return 2; }
58 }; 46 };
59 47
60 #endif << 48 #endif /* G4HELIXIMPLICITEULER_HH */
61 49