d constant <code class="computeroutput"><span class="identifier">pow23_four_minus_pi</span>
          </code> whose value did not match the name (and was unused by Boost.Math),
          see <a href="https://svn.boost.org/trac/boost/ticket/9712" target="_top">#9712</a>.
        </li>
</ul></div>
<h5>
<a name="math_toolkit.history1.h23"></a>
      <span class="phrase"><a name="math_toolkit.history1.boost_1_55"></a></span><a class="link" href="history1.html#math_toolkit.history1.boost_1_55">Boost-1.55</a>
   