title: C++: max integer
body: <p>Is there a C++ cross-platform library that provides me with a portable maximum integer number?</p>
  
  <p>I want to declare:</p>
  
  <pre><code>const int MAX_NUM = /* call some library here */;
  </code></pre>
  
  <p>I use MSVC 2008 unmanaged.</p>