polesnzeroes.h

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// include guard
#ifndef TF_POLESNZEROES_H_VERSION

#define TF_POLESNZEROES_H_VERSION \
  "TF_POLESNZEROES_H   V1.0   "

#include<cmath>
#include<complex>
#include<vector>

namespace fourier {

  class PolesNZeroes {
    public:
      typedef std::complex<double> Tcvalue;
      typedef std::vector<Tcvalue> Tlist;
      PolesNZeroes(): Mpoles(), Mzeroes(), Mnumerator(1.),
        Mdenominator(1.), Mnormal(true) { }

      bool isnormal() const { return(Mnormal); }
      bool isinverse() const { return(!Mnormal); }

      void clear();

      void setnormal() { Mnormal=true; }
      void setinverse() { Mnormal=false; }

      void setpole(const Tcvalue& pole);
      void setzero(const Tcvalue& zero);

      void numfactor(const Tcvalue& factor);
      void numfactor(const double& factor) 
      { this->numfactor(Tcvalue(factor)); };

      void denfactor(const Tcvalue& factor);
      void denfactor(const double& factor)
      { this->denfactor(Tcvalue(factor)); };

      Tcvalue operator()(const double& omega) const
      { return(this->operator()(Tcvalue(omega))); }
      Tcvalue operator()(const Tcvalue& omega) const;
    private:
      // poles
      Tlist Mpoles;
      // zeroes
      Tlist Mzeroes;
      // scale factor
      Tcvalue Mnumerator;
      // scale factor
      Tcvalue Mdenominator;
      // normal (or inverse) 
      bool Mnormal;
  }; // class PolesNZeroes

} // namespace fourier

#endif // TF_POLESNZEROES_H_VERSION (includeguard)

/* ----- END OF polesnzeroes.h ----- */