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

void main(int argc, char *argv[])
{
  double fdisp, fsample, n;

  if (argc < 3) {
    fprintf(stderr, "Usage: %s f_disp f_sample\n", argv[0]);
    fprintf(stderr, "Program calculates n = (f_disp - 0.1769) / (f_sample - 8.0)\n");
    fprintf(stderr, "Fixed values taken from IST#3-CO#2\n");
    exit(1);
  }

  fdisp   = atof(argv[1]);
  fsample = atof(argv[2]);

  n = (fdisp - 0.1769) / (fsample - 8.0);
  printf("n = %20.9f\n", n);
}