| 1 | //
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| 2 | // ********************************************************************
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| 3 | // * License and Disclaimer *
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| 4 | // * *
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of *
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and *
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| 7 | // * conditions of the Geant4 Software License, included in the file *
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These *
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| 9 | // * include a list of copyright holders. *
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| 10 | // * *
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| 11 | // * Neither the authors of this software system, nor their employing *
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| 12 | // * institutes,nor the agencies providing financial support for this *
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| 13 | // * work make any representation or warranty, express or implied, *
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| 14 | // * regarding this software system or assume any liability for its *
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| 15 | // * use. Please see the license in the file LICENSE and URL above *
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| 16 | // * for the full disclaimer and the limitation of liability. *
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| 17 | // * *
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| 18 | // * This code implementation is the result of the scientific and *
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| 19 | // * technical work of the GEANT4 collaboration. *
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| 20 | // * By using, copying, modifying or distributing the software (or *
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| 21 | // * any work based on the software) you agree to acknowledge its *
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| 22 | // * use in resulting scientific publications, and indicate your *
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| 23 | // * acceptance of all terms of the Geant4 Software license. *
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| 24 | // ********************************************************************
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| 25 | //
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| 26 | // $Id: G4Ranecu.cc,v 1.3 2008/06/25 17:20:04 kaitanie Exp $
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| 27 | // Translation of INCL4.2/ABLA V3
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| 28 | // Pekka Kaitaniemi, HIP (translation)
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| 29 | // Christelle Schmidt, IPNL (fission code)
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| 30 | // Alain Boudard, CEA (contact person INCL/ABLA)
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| 31 | // Aatos Heikkinen, HIP (project coordination)
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| 32 |
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| 33 | #include "G4Ranecu.hh"
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| 34 |
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| 35 | G4Ranecu::G4Ranecu()
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| 36 | {
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| 37 | iseed1 = 666;
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| 38 | iseed2 = 777;
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| 39 | }
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| 40 |
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| 41 | G4Ranecu::~G4Ranecu()
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| 42 | {
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| 43 |
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| 44 | }
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| 45 |
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| 46 | G4double G4Ranecu::getRandom()
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| 47 | {
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| 48 | // This is an adapted version of subroutine ranecu:
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| 49 | // A. Padal, J. Sempau Computer Physics Cummunications 175 (2006) 440-450
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| 50 |
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| 51 | // implicit double precision (a-h,o-z), integer*4 (i-n)
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| 52 | // common/rseed/iseed1,iseed2
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| 53 | G4double uscale=1.0/2.147483563e9;
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| 54 |
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| 55 | G4long i1=iseed1/53668;
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| 56 | iseed1=40014*(iseed1-i1*53668)-i1*12211;
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| 57 |
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| 58 | if(iseed1 < 0) iseed1 = iseed1 + 2147483563;
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| 59 |
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| 60 | G4long i2=iseed2/52774;
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| 61 | iseed2=40692*(iseed2-i2*52774)-i2*3791;
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| 62 | if(iseed2 < 0) iseed2=iseed2+2147483399;
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| 63 |
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| 64 | G4long iz=iseed1-iseed2;
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| 65 | if(iz < 1) iz=iz+2147483562;
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| 66 |
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| 67 | return iz*uscale;
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| 68 | }
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