//
// ********************************************************************
// * DISCLAIMER                                                       *
// *                                                                  *
// * The following disclaimer summarizes all the specific disclaimers *
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//
//
// 
// --------------------------------------------------------------------
// GEANT 4 class header file
//
//
// G4ApproxPolySolver
//
// Class description:
//
//   Polynomial solver for equations of the type:
//   c0 + c1 x + c2 x^2 + c3 x^3 + c4 x^4

// Author: 
//   Oliver Link (Oliver.Link@cern.ch)
//
// --------------------------------------------------------------------
#ifndef __G4APPROXPOLYSOLVER__
#define __G4APPROXPOLYSOLVER__

#include "G4Types.hh"
#include "G4String.hh"
#include "geomdefs.hh"

class G4ApproxPolySolver 
{

  // c0 + c1 x + c2 x^2 + c3 x^3 + c4 x^4 

  public:

    G4ApproxPolySolver(){}
    ~G4ApproxPolySolver(){}

  public:

    G4int SolveBiQuadratic( G4double c[], G4double s[]  ) const ;
    G4int SolveCubic( G4double c[], G4double s[] ) const ;
    G4int SolveBiQuadraticNew( G4double c[], G4double s[] ) const ;
    G4int SolveCubicNew( G4double c[], G4double s[],
                         G4double& cubic_discr ) const ;
    G4int SolveQuadratic( G4double c[], G4double s[] ) const ;
};

#endif