display_error.c

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

#include "display_error.h"

double display_error(long long average,
             long long high,
             long long low,
             long long expected,
                     int quiet) {

   double error;

   error=(((double)average-expected)/expected)*100.0;

   if (!quiet) {
      printf("   Expected: %lld\n", expected);
      printf("   High: %lld   Low:  %lld   Average:  %lld\n",
          high,low,average);

      printf("   ( note, a small value above %lld may be expected due\n",
      expected);
      printf("     to overhead and interrupt noise, among other reasons)\n");

      printf("   Average Error = %.2f%%\n",error);
   }

   return error;

}