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

#define NITER 10 * 1000

#define EARTH_RADIUS 3438.461

void distance(double lat1degrees, double lon1degrees, double lat2degrees, double lon2degrees)
{
  double lat1;
  double lon1;
  double lat2;
  double lon2;

  printf("lat1\n");
  lat1 = lat1degrees * M_PI / 180.0;
  printf("lon1\n");
  lon1 = lon1degrees * M_PI / 180.0;
  printf("lat2\n");
  lat2 = lat2degrees * M_PI / 180.0;
  printf("lon2\n");
  lon2 = lon2degrees * M_PI / 180.0;
}

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

  int iter;

  int niter = NITER;
  for (iter = 0; iter < niter; iter++) {
    distance(36.12, -86.67, 33.94, -118.4);
  }
  return 0;
}