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

int main(int argc,char **argv)
{
  double x;
  extern double mylog(double);
  for (x = 0.0; x < 100.0; x += 0.2) {
    printf("x = %f; log(x) = %f; exp(log(x)) = %f; mylog(x) = %f; exp(mylog(x) = %f\n",x,log(x),exp(log(x)),mylog(x),exp(mylog(x)));
  }
  return 0;
}