Someone

 ./a.out
1 joystick(s) found
using joystick 0

  +-------------------------------------------------+
  | trying to calibrate joystick                    |
  | please don't move your pad until we're done...  |
  +-------------------------------------------------+

axes[0] = -256
axes[1] = -256
ok, now you can try to move your pad...
UP (cur = -32512, axes[1] = -256)
LEFT (cur = -32768, axes[0] = -256)

# to infinity