Fifth-order low-pass filter

fifth_order.cpp

#include "fifth_order.h"
#include "data_sources.h"
#include <cstdlib>
#include <cstring>

int sc_main(int argc, char **argv)
{
	double amplitude, frequency;

	if(argc < 3)
	{
		cout <<" In sufficient input params. \n usage: ./sim <amplitude> <frequency>" << endl;
		exit(0);
	}

	vector<sca_signal<double>> sig_in(2);
	vector<sca_signal<double>> sig_out(3);

	amplitude = strtod(argv[1], NULL);
	frequency = strtod(argv[2], NULL);

	/* Declare filter modules */
	first_order f1("First");
	second_order f2_1("Second-1");
	f2_1.set_coeffs(1.0, 1.0, 4.3E-3, 7.0E-6);
	second_order f2_2("Second-2");
	f2_2.set_coeffs(1.0, 1.0, 1.6E-3, 7.0E-6);

	sin_source sine("Sine");
	sine.out(sig_in.at(0));
	sine.amplitude = amplitude;
	sine.frequency = frequency;
	
	f1.sig_in(sig_in.at(0));
	f1.sig_out(sig_out.at(0));
	f2_1.sig_in(sig_out.at(0));
	f2_1.sig_out(sig_out.at(1));
	f2_2.sig_in(sig_out.at(1));
	f2_2.sig_out(sig_out.at(2));

	//tracing 
	sca_trace_file* atf = sca_create_tabular_trace_file("Fifth-order");
	sca_trace(atf, sig_in.at(0), "Input");
	sca_trace(atf, sig_out.at(2), "Output");

	cout << "Simulation started..." << endl;
	sc_start(100.0, SC_MS);
	sc_stop();
	
	cout << "Simulation finished." << endl;

	sca_close_tabular_trace_file(atf);
	return 0;
}