iir_filter.h

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#ifndef IIR_FILTER_H
#define IIR_FILTER_H
 
#include <vector>
 
namespace mrs_lib
{
 
  class IirFilter
  {
 
  public:
    IirFilter(const std::vector<double>& a, const std::vector<double>& b);
    IirFilter();
 
    double iterate(const double input);
 
    std::tuple<std::vector<double>, std::vector<double>> getCoeffs();
    std::vector<double> getBuffer();
 
  private:
    std::vector<double> a_;
    std::vector<double> b_;
    size_t order_;
    std::vector<double> buffer_;
  };
 
} // namespace mrs_lib
 
#endif