#include <limits>
#include <time.h>
#include <iostream>

using namespace std;

int main(int argc, char** argv)
{
   const double qNaN = numeric_limits<double>::quiet_NaN();
   const double sNaN = numeric_limits<double>::signaling_NaN();
   clock_t start, end;
   double b = 0.0;

   int i;
   const int upper = 1000000000;

   start = clock();
   for (i=0; i<upper; i++)
   {
      b += 1.0;
   }
   end = clock();

   cout << "add1:    \t\t" << (end-start) << " ticks\tSum: " << b << endl;

   b = 0.0;
   start = clock();
   for (i=0; i<upper; i++)
   {
      b += qNaN;
   }
   end = clock();
   cout << "addQNaN: \t\t" << (end-start) << " ticks\tSum: " << b << endl;

   b = 0.0;
   start = clock();
   for (i=0; i<upper; i++)
   {
      b += sNaN;
   }
   end = clock();
   cout << "addSNaN: \t\t" << (end-start) << " ticks\tSum: " << b << endl;
}