an class="underline">Thread Specification</span></a>
      </h5>
<div class="blockquote"><blockquote class="blockquote">
<p>
          The parallel algorithms have a integer parameter indicating the <span class="bold"><strong>number of threads</strong></span> to use in the sorting process,
          which always is the last value in the call.
        </p>
<p>
          The default value (if left unspecified) is the number of HW threads of
          the machine where the program is running provided by std::t