ifier">time_duration_type</span><span class="special">;</span>
  <span class="keyword">typedef</span> <a class="link" href="ptime.html" title="Class ptime">ptime</a>                                <a name="boost.posix_time.ptime.time_type"></a><span class="identifier">time_type</span><span class="special">;</span>         

  <span class="comment">// <a class="link" href="ptime.html#boost.posix_time.ptimeconstruct-copy-destruct">construct/copy/destruct</a></span>
  <a class="link" href="ptime.html#id-1_3_12