Import Geant4 0.0.0 source tree

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+// This code implementation is the intellectual property of
+// the RD44 GEANT4 collaboration.
+//
+// By copying, distributing or modifying the Program (or any work
+// based on the Program) you indicate your acceptance of this statement,
+// and all its terms.
+//
+// $Id: G4PhysicsLinearVector.hh,v 2.0 1998/07/02 17:32:50 gunter Exp $
+// GEANT4 tag $Name: geant4-00 $
+//
+// 
+//--------------------------------------------------------------------
+//      GEANT 4 class header file
+//
+//  G4PhysicsLinearVector.hh
+//
+//  Description:
+//    A physics vector which has values of energy-loss, cross-section, 
+//    and other physics values of a particle in matter in a given 
+//    range of the energy, momentum, etc. The scale of energy/momentum
+//    bins is in linear.
+//
+//  History:
+//    02 Dec. 1995, G.Cosmo : Structure created based on object model
+//    03 Mar. 1996, K.Amako : Implemented the 1st version
+//    01 Jul. 1996, K.Amako : Cache mechanism and hidden bin from the 
+//                            user introduced.
+//    26 Sep. 1996, K.Amako : Constructor with only 'bin size' added.
+//
+//--------------------------------------------------------------------
+
+#ifndef G4PhysicsLinearVector_h
+#define G4PhysicsLinearVector_h 1
+
+#include "globals.hh"
+#include "G4DataVector.hh"
+#include "G4PhysicsVector.hh"
+
+
+class G4PhysicsLinearVector : public G4PhysicsVector  
+{
+  public:
+
+    // Constructors
+    G4PhysicsLinearVector();
+    G4PhysicsLinearVector(size_t theNbin);
+    G4PhysicsLinearVector(G4double theEmin, G4double theEmax, size_t theNbin);
+
+    // Destructor
+    ~G4PhysicsLinearVector();
+
+  protected:
+
+    size_t FindBinLocation(G4double theEnergy) const;
+         // Find bin# in which theEnergy belongs - pure virtual function
+
+  private:
+
+    G4double dBin;          // Bin width - useful only for fixed binning
+    G4double baseBin;       // Set this in constructor to gain performance
+};
+
+
+inline size_t G4PhysicsLinearVector::FindBinLocation(G4double theEnergy) const {
+
+  // For G4PhysicsLinearVector, FindBinLocation is implemented using
+  // a simple arithmetic calculation.
+  //
+  // Because this is a virtual function, it is accessed through a
+  // pointer to the G4PhyiscsVector object for most usages. In this
+  // case, 'inline' will not be invoked. However, there is a possibility 
+  // that the user access to the G4PhysicsLinearVector object directly and 
+  // not through pointers or references. In this case, the 'inline' will
+  // be invoked. (See R.B.Murray, "C++ Strategies and Tactics", Chap.6.6)
+
+  return size_t( theEnergy/dBin - baseBin ); 
+}
+
+#endif
+
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