title: What's a portable value for UINT_MIN?
body: <p>In <code>limits.h</code>, there are #defines for <code>INT_MAX</code> and <code>INT_MIN</code> (and SHRT_* and LONG_* and so on), but only <code>UINT_MAX</code>.</p>
  
  <p>Should I define <code>UINT_MIN</code> myself? Is <code>0</code> (positive zero) a portable value?</p>