Geant4 11.2.2
Toolkit for the simulation of the passage of particles through matter
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G4QSS3.cc
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25//
26// QSS3 implementation
27//
28// Author: Lucio Santi - 2020-2021.
29// --------------------------------------------------------------------
30
31#include "G4QSS3.hh"
32
34 : simulator(sim)
35{
36}
37
39{
40 G4int i;
41 G4double *x = simulator->x;
42 G4double *q = simulator->q;
43 G4double *lqu = simulator->lqu;
44 G4double *time = simulator->nextStateTime;
45 G4double coeff[4];
46
47 for(i = 0; i < 3; i++)
48 {
49 const G4int var = inf[i],
50 cf0 = 4*var,
51 cf1 = cf0 + 1,
52 cf2 = cf1 + 1,
53 cf3 = cf2 + 1;
54
55 if(std::fabs(q[cf0] - x[cf0]) >= lqu[var])
56 {
57 time[var] = t;
58 }
59 else
60 {
61 coeff[0] = q[cf0] + lqu[var] - x[cf0];
62 coeff[1] = q[cf1] - x[cf1];
63 coeff[2] = q[cf2] - x[cf2];
64 coeff[3] = -x[cf3];
65 time[var] = t + min_pos_root_3_alt(coeff, q[cf0] - lqu[var] - x[cf0]);
66 }
67 }
68}
double G4double
Definition G4Types.hh:83
int G4int
Definition G4Types.hh:85
G4double min_pos_root_3_alt(G4double *coeff, G4double cf0Alt)
Definition G4QSS3.hh:474
void recompute_next_times(G4int *inf, G4double t)
Definition G4QSS3.cc:38
G4QSS3(QSS_simulator)
Definition G4QSS3.cc:33
double q[Qss_misc::VAR_IDX_END *(Qss_misc::MAX_QSS_STEPPER_ORDER+1)]
double nextStateTime[Qss_misc::VAR_IDX_END]
double x[Qss_misc::VAR_IDX_END *(Qss_misc::MAX_QSS_STEPPER_ORDER+1)]
Definition G4qss_misc.hh:97
double lqu[Qss_misc::VAR_IDX_END]