Import Geant4 10.0.0 source tree

2016-06-10 11:51:14 +02:00
parent e2d2f9810a
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+//
+// ********************************************************************
+// * License and Disclaimer                                           *
+// *                                                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
+// *                                                                  *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+#include "G4ILawCommonTruncatedExp.hh"
+#include "G4Track.hh"
+
+#include "G4BOptnForceCommonTruncatedExp.hh"
+#include "G4BiasingProcessInterface.hh"
+
+//#include "G4Exception.hh"
+
+G4ILawCommonTruncatedExp::G4ILawCommonTruncatedExp(G4String name)
+  : G4VBiasingInteractionLaw(name),
+    fExpInteractionLaw("expLawFor"+name)
+    //fIsSingular(false)
+{}
+
+G4ILawCommonTruncatedExp::~G4ILawCommonTruncatedExp()
+{}
+
+
+G4double G4ILawCommonTruncatedExp::ComputeEffectiveCrossSectionAt(G4double distance) const
+{
+  return fExpInteractionLaw.ComputeEffectiveCrossSectionAt( distance ) * fOperation->GetTriggeredProcessXSfraction();
+}
+
+G4double G4ILawCommonTruncatedExp::ComputeNonInteractionProbabilityAt(G4double distance) const
+{
+  G4double niProba = fExpInteractionLaw.ComputeNonInteractionProbabilityAt( distance );
+
+  if ( niProba > 0.0 )
+    {
+      return std::exp( std::log(niProba) / fNumberOfSharing );
+    }
+  else
+    {
+      G4ExceptionDescription ed;
+      ed << " Negative probability for `" << GetName() << "' p = " << niProba << " distance = " << distance <<  " !!! " << G4endl;
+      G4Exception(" G4ILawCommonTruncatedExp::ComputeNonInteractionProbabilityAt(...)",
+		  "BIAS.GEN.08",
+		  JustWarning,
+		  ed);
+      return niProba;
+    }
+}
+
+G4double G4ILawCommonTruncatedExp::SampleInteractionLength()
+{
+  if ( fFirstSamplingCall ) fInteractionDistance = fExpInteractionLaw.SampleInteractionLength();
+  fFirstSamplingCall = false;
+  return DBL_MAX;
+}
+
+G4double G4ILawCommonTruncatedExp::UpdateInteractionLengthForStep(G4double truePathLength)
+{
+  if ( fFirstUpdateCall ) 
+    fInteractionDistance = fExpInteractionLaw.UpdateInteractionLengthForStep(truePathLength);
+  fFirstUpdateCall = false;
+  return  DBL_MAX;
+}
+
+void G4ILawCommonTruncatedExp::reset()
+{
+  fFirstSamplingCall       = true;
+  fFirstUpdateCall         = true;
+}