#include <stdio.h>
long double y = 0;
main() {
  union { long double ld; long long ll[2]; } x = { 15.0l };

  while (x.ld > 0)
    {
      printf ("0x%016llx.%016llx = %L35.30g\n", x.ll[0], x.ll[1], x.ld);
      x.ld += y;
      printf ("0x%016llx.%016llx = %L35.30g\n", x.ll[0], x.ll[1], x.ld);
      x.ld /= 10.0l;
    }
}