language: C++ 4.7.2 (gcc-4.7.2)
date: 245 days 17 hours ago
link:
visibility: private 
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#include <iostream>
#include <ctime>
#include <cmath>
#include <cfloat>
 
const int num_tests = 200000000;
 
int main() {
   double r=0.0;
   clock_t start = clock();
   for(int i=0; i<num_tests; ++i)
       r += i;
   clock_t end = clock();
   std::cout << r << " empty loop took " << double(end-start)/CLOCKS_PER_SEC << "s\n";
 
   r=0;
   start = clock();
   for(int i=0; i<num_tests; ++i)
       r += i*double(FLT_RADIX);
   end = clock();
   std::cout << r << " multiplication loop took " << double(end-start)/CLOCKS_PER_SEC << "s\n";
 
   r=0;
   start = clock();
   for(int i=0; i<num_tests; ++i)
       r += scalbln(i, 1);
   end = clock();
   std::cout << r << " scalbln loop took " << double(end-start)/CLOCKS_PER_SEC << "s\n";
 
   return 0;
}