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//
// $Id: G4PhysicsLogVector.cc,v 1.16 2008/09/06 19:52:16 vnivanch Exp $
// GEANT4 tag $Name: HEAD $
//
// 
// --------------------------------------------------------------
//      GEANT 4 class implementation file
//
//  G4PhysicsLogVector.cc
//
//  History:
//    02 Dec. 1995, G.Cosmo : Structure created based on object model
//    15 Feb. 1996, K.Amako : Implemented the 1st version
//    01 Jul. 1996, K.Amako : Hidden bin from the user introduced
//    26 Sep. 1996, K.Amako : Constructor with only 'bin size' added
//    11 Nov. 2000, H.Kurashige : use STL vector for dataVector and binVector
//    9  Mar. 2001, H.Kurashige : add PhysicsVector type and Retrieve
//    05 Sep. 2008, V.Ivanchenko : added protections for zero-length vector
//
// --------------------------------------------------------------

#include "G4PhysicsLogVector.hh"

G4PhysicsLogVector::G4PhysicsLogVector()
  : G4PhysicsVector(), dBin(0.), baseBin(0.)
{ 
  type = T_G4PhysicsLogVector;
}

G4PhysicsLogVector::G4PhysicsLogVector(size_t theNbin)
  : G4PhysicsVector(), dBin(0.), baseBin(0.)
{
  type = T_G4PhysicsLogVector;

  // Add extra one bin (hidden to user) to handle correctly when 
  // Energy=theEmax in getValue. 

  numberOfBin = theNbin;

  if(numberOfBin > 0) {
    dataVector.resize(theNbin+1);
    binVector.resize(theNbin+1); 
    edgeMin = 1;
    edgeMax = numberOfBin;
    for (size_t i=0; i<=numberOfBin; i++) {
      binVector[i] = i + 1;
      dataVector[i]= 0.0;
    }
  }
}  

G4PhysicsLogVector::G4PhysicsLogVector(G4double theEmin, 
                                       G4double theEmax, size_t theNbin)
  : G4PhysicsVector(), dBin(std::log10(theEmax/theEmin)/theNbin),
    baseBin(std::log10(theEmin)/dBin)
{
  type = T_G4PhysicsLogVector;

  // Add extra one bin (hidden to user) to handle correctly when 
  // Energy=theEmax in getValue. 
  dataVector.resize(theNbin+1);
  binVector.resize(theNbin+1); 

  numberOfBin = theNbin;

  if(numberOfBin > 0) {
    for (size_t i=0; i<=numberOfBin; i++) {
      binVector[i] = std::pow(10., std::log10(theEmin)+i*dBin);
      dataVector[i]= 0.0;
    }
    edgeMin = binVector[0];
    edgeMax = binVector[numberOfBin-1];
  }
}  

G4PhysicsLogVector::~G4PhysicsLogVector(){}

G4bool G4PhysicsLogVector::Retrieve(std::ifstream& fIn, G4bool ascii)
{
  G4bool success = G4PhysicsVector::Retrieve(fIn, ascii);
  if (success)
  {
    G4double theEmin = binVector[0];
    dBin = std::log10(binVector[1]/theEmin);
    baseBin = std::log10(theEmin)/dBin;
  }
  return success;
}