makeavg_en.c

TCP westwood code, download

/*
 * Calculate Average for energy values
 *
 * syntax: makeavg_en <input_file> <output_file> [<simulation_time>]
 *
 */

#include <stdio.h>
#include <stdlib.h>

int main(int argc, char **argv) 
{
	FILE *finput;
	FILE *foutput;
	int time=0;
	float energy=0.0;
	int sim_time;
	
	if (argc<3 || argc>4) {
		printf("Error: usage makeavg_en <input_file> <output_file> [<simulation_time>]\n");
		return 1;
	}
	if (argc==3) 
		sim_time=50;
	else
		sim_time=atoi(argv[3]);
	double energy_values[sim_time+1];
	int sta_at_time[sim_time+1];
	int i;
	for (i=0; i<sim_time+1; i++) {
		energy_values[i]=0.0;
		sta_at_time[i]=0;
	}
	if ((finput=fopen(argv[1],"r"))==NULL) {
		printf("Error: file %s doesn't exist \n",argv[1]);
		return 1;
	}
	while (!feof(finput)) {
		float d_time=0.0;
		fscanf(finput,"%f %f",&d_time,&energy);
		if (d_time>(double)sim_time || d_time<0.0) continue;
		time=(int)d_time;
		energy_values[time]+=energy;
		//printf("Energy at time %d: %f\n",time,energy_values[time]);
		sta_at_time[time]++;
	}
	fclose(finput);
	foutput=fopen(argv[2],"w");
	for (i=1; i<sim_time+1; i++) {
		double energy_sum=energy_values[i];
		int sta_num=sta_at_time[i];
		double energy_avg=energy_sum/sta_num;
		fprintf(foutput,"%f %f\n",(float)i,energy_avg);
	}
	fclose(foutput);
	return 0;
}