EqSolver.h

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#ifndef ALGTOOLS_EQSOLVER_H
#define ALGTOOLS_EQSOLVER_H 1
// Include files
// from CLHEP
#include "CLHEP/GenericFunctions/GenericFunctions.hh"
#include "CLHEP/GenericFunctions/Argument.hh"
#include "CLHEP/GenericFunctions/AbsFunction.hh"
// from Gaudi
#include "GaudiAlg/GaudiTool.h"
//from GSL
#include "gsl/gsl_multiroots.h"

// local
#include "GaudiGSL/IEqSolver.h"

class EqSolver : public extends<GaudiTool,
                                IEqSolver> {
public:
  typedef std::vector<Equations>   Jacobi ;
public:

  StatusCode solver( const Equations& funcs ,
                     Arg&             arg   ) const override;

  StatusCode initialize () override;
  StatusCode finalize   () override;

  ~EqSolver( ) override; 

  class  EqSolverMisc
  {
  public:
    EqSolverMisc ( const Equations& funcs ,
                   Arg&             arg   ) ;
    // destructor
    ~EqSolverMisc ();
  public:
    inline const Arg&       argument  () const { return m_argum   ; }
    inline       Arg&       argument  ()       { return m_argum   ; }
    inline const Equations* equations () const { return m_eqs     ; }
    inline const Jacobi&    jacobi    () const { return m_jac     ; }
  private:
    // default constructor is disabled
    EqSolverMisc () = delete;
    // copy constructor is disabled
    EqSolverMisc           ( const EqSolverMisc& ) = delete;
    // assignment operator is disabled
    EqSolverMisc& operator=( const EqSolverMisc& ) = delete;
  private:
    Arg              m_argum ;
    const Equations* m_eqs   ;
    Jacobi           m_jac   ;
  };


  EqSolver( const std::string& type,
            const std::string& name,
            const IInterface* parent);

private:

  EqSolver();
  EqSolver           ( const EqSolver& );
  EqSolver& operator=( const EqSolver& );

private:

  std::string m_algType         ;
  double      m_max_iter        ;
  double      m_norm_residual   ;
  const gsl_multiroot_fdfsolver_type* m_type ;

};

// ============================================================================
// The END
// ============================================================================
#endif // ALGTOOLS_EQSOLVER_H
// ============================================================================