Geant4 Cross Reference |
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 // QSS3 implementation 27 // 28 // Author: Lucio Santi (Univ. Buenos Aires) - 2020-2021 29 // -------------------------------------------------------------------- 30 31 #include "G4QSS3.hh" 32 33 G4QSS3::G4QSS3(QSS_simulator sim) 34 : simulator(sim) 35 { 36 } 37 38 void G4QSS3::recompute_next_times(G4int* inf, G4double t) 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 } 69