First-order and Second-order filter modules

fifth_order.h

#ifndef FIFTH_ORDER_H
#define FIFTH_ORDER_H


#include<systemc-ams>
using namespace std;
using namespace sca_tdf;
using namespace sca_util;
using namespace sc_core;
SCA_TDF_MODULE(first_order)
{

	private:

		/*Scaled Laplace TF in the time domain, numerator-denominator form */
		sca_ltf_nd ltf_nd;
		/*Vector to store denom. and num. coefficients*/
		sca_vector<double> denom;
		sca_vector<double> numer;
	public:
		sca_in<double> sig_in;
		sca_out<double> sig_out;

		void initialize()
		{
			numer(0) = 1.0;
			denom(0) = 1.0;
			denom(1) = 2.65E-3;
		}
		/* Initialize port attributes*/
		void set_attributes()
		{
			sig_out.set_timestep(1.0, SC_US);
			/* Specify the number of data samples that need to pass through I/O ports per time step */
			sig_out.set_rate(1);
			sig_in.set_rate(1);
			/*Feedback loopp requires a delay, we specify one time step delay*/
			sig_out.set_delay(1);
		}

		void processing()
		{
			/*Computation here*/
			sig_out.write(ltf_nd(numer, denom, sig_in.read(), 1.0) );
		}

		SCA_CTOR(first_order) {}
		~first_order() {}
};

SCA_TDF_MODULE(second_order)
{
	private:
		/*Scaled Laplace TF in the time domain, numerator-denominator form */
		sca_ltf_nd ltf_nd;
		/*Vector to store denom. and num. coefficients*/
		sca_vector<double> denom;
		sca_vector<double> numer;

	public:
		sca_in<double> sig_in;
		sca_out<double> sig_out;
		
		void initialize()
		{
			numer(0) = 1.0;
			denom(0) = 1.0;
			denom(1) = 4.3E-3;
			denom(2) = 7.0E-6;
		}
		void set_attributes()
		{
			sig_out.set_timestep(1.0, SC_US);
			/* Specify the number of data samples that need to pass through I/O ports per time step */
			sig_out.set_rate(1);
			sig_in.set_rate(1);
			/*Feedback loopp requires a delay, we specify one time step delay*/
			sig_out.set_delay(1);
		}
		void processing()
		{
			/*Computation here*/
			sig_out.write(ltf_nd(numer, denom, sig_in.read(), 1.0) );
		}

		void set_coeffs(double n0, double d0, double d1, double d2)
		{
			numer(0) = n0;
			denom(0) = d0;
			denom(1) = d1;
			denom(2) = d2;
		}

		SCA_CTOR(second_order) {}
		~second_order() {}
		
};


#endif