title: Where is stdbool.h?
body: <p>I want to find the <code>_Bool</code> definition on my system, so for systems where it's missing I can implement it. I've seen various definitions for it here and on other sites, but wanted to check on the system for the definitive definition.</p>
  
  <p>Slight problem, in that I can't find where _Bool is defined or even stdbool.h</p>
  
  <pre><code>mussys@debmus:~$ find /usr/include/* -name stdbool.h
  /usr/include/c++/4.3/tr1/stdbool.h
  </code></pre>
  
  <p>And <code>grep</code> for <code>_Bool</code> on <code>/usr/include/*</code> and <code>/usr/include/*/*</code> does not find it either.</p>
  
  <p>So where is it?</p>