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// $Id: G4InuclSpecialFunctions.hh,v 1.18 2010/09/14 17:51:36 mkelsey Exp $
// Geant4 tag: $Name: hadr-casc-V09-03-85 $
//
// 20100114  M. Kelsey -- Remove G4CascadeMomentum, use G4LorentzVector directly
// 20100319  M. Kelsey -- Add optional mass argument to generateWithFixedTheta;
//		define new generateWithRandomAngles, encapsulating code; define
//		cbrt() cube-root function (in math.h, but not in <math>!)
// 20100412  M. Kelsey -- Modify paraMaker[Truncated] to take buffer as argument
// 20100914  M. Kelsey -- Migrate to integer A and Z.  Discard unused binding
//		energy functions

#ifndef G4INUCL_SPECIAL_FUNC_HH
#define G4INUCL_SPECIAL_FUNC_HH

#include "globals.hh"
#include <algorithm>
#include <vector>
#include "G4LorentzVector.hh"

namespace G4InuclSpecialFunctions {
  G4double bindingEnergy(G4int A, G4int Z);

  // NOTE:  Used only by G4Fissioner
  G4double bindingEnergyAsymptotic(G4int A, G4int Z);

  G4double FermiEnergy(G4int A, G4int Z, G4int ntype);
  
  // NOTE:  Passing Z as double here, to be used as interpolation argument
  void paraMaker(G4double Z, std::pair<std::vector<G4double>, std::vector<G4double> >& parms);

  void paraMakerTruncated(G4double Z, std::pair<G4double, G4double>& parms); 

  G4double getAL(G4int A);
 
  G4double csNN(G4double e);

  G4double csPN(G4double e);

  G4double G4cbrt(G4double x);	// Can't use "cbrt" name, clashes with <math.h>

  G4double inuclRndm();

  G4double randomGauss(G4double sigma);

  G4double randomPHI();

  std::pair<G4double, G4double> randomCOS_SIN();

  G4double nucleiLevelDensity(G4int A);

  // Optional mass argument will be used to fill G4LorentzVector correctly
  G4LorentzVector generateWithFixedTheta(G4double ct, G4double p,
					 G4double m=0.);

  G4LorentzVector generateWithRandomAngles(G4double p, G4double m=0.);
}


#endif