compute-bw-normal.c

对IEEE 802.11e里的分布式信道接入算法EDCA进行改进

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



/* Compute the maximum between the number in  
 * the second column                 
 * 
 * Input:
 *   src1, src2 - two columns files
 *
 *   res - two column file
 */

int main(int argc, char **argv) {

  FILE *df1, *df2;
  
	int nodes;
	
  float sending_rate;
  float ratio;
	float good1;
	
	
	ratio = 0.0;
  good1 =0.0;
  if (argc != 4) {
    //printf("Ussage: %s srcfile nflows \n", argv[0]);
    exit(-1);
  }
 
 if (!(df1 = fopen (argv[1], "r"))) {
    printf ("fopen() failed\n");
    exit (1);
  }
	if (!(df2 = fopen (argv[2], "w"))) {
    printf ("fopen() failed\n");
    exit (1);
  }
  
	sending_rate = atof(argv[3]);
	
	while ((!feof(df1)) && (!feof(df2))) {
		
		fscanf(df1, "%d%f\n", &nodes, &good1);

		ratio = good1 / sending_rate;
		
		fprintf(df2,"%d\t%f\n", nodes,ratio);
		
		//printf("nodes %d\t ratio %f\n", nodes,  ratio);
  } 
  
	
	
  fclose(df1);
  fclose(df2);
  
}