poly_solver_policies.h

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#ifndef TIL_POLY_SOLVER_POLICIES_H
#define TIL_POLY_SOLVER_POLICIES_H


namespace til { namespace math { namespace policy
{    

  //---------------------------------------------------------------------------

  class InfinitySolutions_Advertise
  {
  public: // typedefs
  
    typedef InfinitySolutions_Advertise Self;
  
  public: // constructors & destructor
    InfinitySolutions_Advertise() : m_hasInfSols(false) {}
    
  public: // functions

    template < typename TPrec >
    void operator()(PolySolver_real<TPrec, Self> & solver)
    {
      m_hasInfSols = true;
    }
      
    bool hasInfSols() { return m_hasInfSols; }

  private: // data
  
    bool m_hasInfSols;
  };

  //---------------------------------------------------------------------------

  struct InfinitySolutions_None
  {
    typedef InfinitySolutions_None Self;
    template < typename TPrec >
    void operator()(PolySolver_real<TPrec, Self> & solver)
    {
      solver.set_nsols(0);
    }
  };

  //---------------------------------------------------------------------------

  struct InfinitySolutions_Throw
  {
    class InfinityOfSolutions : public std::exception {};
    
    typedef InfinitySolutions_Throw Self;
    template < typename TPrec >
    void operator()(PolySolver_real<TPrec, Self> &)
    {
      throw InfinityOfSolutions();
    }
  };

  //---------------------------------------------------------------------------

}}} // namespace til::math::policy


#endif