| 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 | #include "G4MesonSplitter.hh" |
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| 27 | #include "Randomize.hh" |
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| 28 | |
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| 29 | G4bool G4MesonSplitter::SplitMeson(G4int PDGcode, G4int* aEnd, G4int* bEnd) |
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| 30 | { |
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| 31 | G4bool result = true; |
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| 32 | G4int absPDGcode = std::abs(PDGcode); |
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| 33 | if (absPDGcode >= 1000) return false; |
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| 34 | if(absPDGcode == 22) |
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| 35 | { |
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| 36 | G4int it=1; |
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| 37 | if(G4UniformRand()<.5) it++; |
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| 38 | *aEnd = it; |
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| 39 | *bEnd = -it; |
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| 40 | } |
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| 41 | else |
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| 42 | { |
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| 43 | G4int heavy = absPDGcode/100; |
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| 44 | G4int light = (absPDGcode%100)/10; |
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| 45 | G4int anti = 1 - 2*(std::max(heavy, light)%2); |
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| 46 | if (PDGcode < 0 ) anti = -anti; |
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| 47 | heavy *= anti; |
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| 48 | light *= -anti; |
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| 49 | if ( anti < 0) G4SwapObj(&heavy, &light); |
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| 50 | *aEnd = heavy; |
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| 51 | *bEnd = light; |
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| 52 | } |
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| 53 | return result; |
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| 54 | } |
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