Geant4
10.02.p01
Main Page
Related Pages
Modules
Namespaces
Classes
Files
File List
File Members
G4ClassicalRK4.hh
Go to the documentation of this file.
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
//
27
// $Id: G4ClassicalRK4.hh 66356 2012-12-18 09:02:32Z gcosmo $
28
//
29
//
30
// class G4ClassicalRK4
31
//
32
// Class description:
33
//
34
// Integrate the equations of the motion of a particle in a magnetic field
35
// using the classical 4th Runge-Kutta method.
36
37
// History:
38
// - Created: J.Apostolakis, V.Grichine - 30.1.97
39
// - Moved into G4MagErrorStepper: W.Wander <wwc@mit.edu> - 12/09/97
40
// -------------------------------------------------------------------
41
42
#include "
G4MagErrorStepper.hh
"
43
44
class
G4ClassicalRK4
:
public
G4MagErrorStepper
45
{
46
public
:
// with description
47
48
G4ClassicalRK4
(
G4EquationOfMotion
*EquationMotion,
G4int
numberOfVariables = 6) ;
49
50
~G4ClassicalRK4
() ;
51
52
// A stepper that does not know about errors.
53
// It is used by the MagErrorStepper stepper.
54
55
void
DumbStepper
(
const
G4double
yIn[],
56
const
G4double
dydx[],
57
G4double
h,
58
G4double
yOut[] ) ;
59
// Given values for the variables y[0,..,n-1] and their derivatives
60
// dydx[0,...,n-1] known at x, use the classical 4th Runge-Kutta
61
// method to advance the solution over an interval h and return the
62
// incremented variables as yout[0,...,n-1], which not be a distinct
63
// array from y. The user supplies the routine RightHandSide(x,y,dydx),
64
// which returns derivatives dydx at x. The source is routine rk4 from
65
// NRC p. 712-713 .
66
67
public
:
// without description
68
69
G4int
IntegratorOrder
()
const
{
return
4; }
70
71
private
:
72
73
void
StepWithEst
(
const
G4double
yIn[],
74
const
G4double
dydx[],
75
G4double
h,
76
G4double
yOut[],
77
G4double
& alpha2,
78
G4double
& beta2,
79
const
G4double
B1[],
80
G4double
B2[] );
81
// No longer used. Obsolete.
82
83
G4ClassicalRK4
(
const
G4ClassicalRK4
&);
84
G4ClassicalRK4
&
operator=
(
const
G4ClassicalRK4
&);
85
// Private copy constructor and assignment operator.
86
87
private
:
88
89
// G4int fNumberOfVariables ; // is set default to 6 in constructor
90
91
G4double
*
dydxm
, *
dydxt
, *
yt
;
// scratch space - not state
92
};
G4ClassicalRK4::yt
G4double * yt
Definition:
G4ClassicalRK4.hh:91
G4ClassicalRK4::dydxt
G4double * dydxt
Definition:
G4ClassicalRK4.hh:91
G4ClassicalRK4::IntegratorOrder
G4int IntegratorOrder() const
Definition:
G4ClassicalRK4.hh:69
G4EquationOfMotion
Definition:
G4EquationOfMotion.hh:49
G4ClassicalRK4::~G4ClassicalRK4
~G4ClassicalRK4()
Definition:
G4ClassicalRK4.cc:53
G4MagErrorStepper
Definition:
G4MagErrorStepper.hh:49
G4ClassicalRK4::operator=
G4ClassicalRK4 & operator=(const G4ClassicalRK4 &)
G4int
int G4int
Definition:
G4Types.hh:78
G4ClassicalRK4::DumbStepper
void DumbStepper(const G4double yIn[], const G4double dydx[], G4double h, G4double yOut[])
Definition:
G4ClassicalRK4.cc:71
G4ClassicalRK4::StepWithEst
void StepWithEst(const G4double yIn[], const G4double dydx[], G4double h, G4double yOut[], G4double &alpha2, G4double &beta2, const G4double B1[], G4double B2[])
Definition:
G4ClassicalRK4.cc:118
G4ClassicalRK4::dydxm
G4double * dydxm
Definition:
G4ClassicalRK4.hh:91
G4ClassicalRK4
Definition:
G4ClassicalRK4.hh:44
G4ClassicalRK4::G4ClassicalRK4
G4ClassicalRK4(G4EquationOfMotion *EquationMotion, G4int numberOfVariables=6)
Definition:
G4ClassicalRK4.cc:39
G4double
double G4double
Definition:
G4Types.hh:76
G4MagErrorStepper.hh
geant4.10.02.p01
source
geometry
magneticfield
include
G4ClassicalRK4.hh
Generated on Thu Mar 3 2016 14:41:11 for Geant4 by
1.8.8