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  26 <div class="titlepage"><div><div><h3 class="title">
  27 <a name="math_toolkit.float128.typeinfo"></a><a class="link" href="typeinfo.html" title="typeinfo"><code class="computeroutput"><span class="identifier">typeinfo</span></code></a>
  28 </h3></div></div></div>
  29 <p>
  30         For GCC 4.8.1 it was not yet possible to use <code class="computeroutput"><span class="identifier">typeinfo</span></code>
  31         for <code class="computeroutput"><span class="identifier">float_128</span></code> on GCC: see
  32         <a href="http://gcc.gnu.org/bugzilla/show_bug.cgi?id=43622" target="_top">GCC 43622</a>.
  33       </p>
  34 <p>
  35         So this code (to display the mangled name) failed to link <code class="computeroutput"><span class="identifier">undefined</span>
  36         <span class="identifier">reference</span> <span class="identifier">to</span>
  37         <span class="identifier">typeinfo</span> <span class="keyword">for</span>
  38         <span class="identifier">__float128</span></code>
  39       </p>
  40 <pre class="programlisting"><span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="keyword">typeid</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">float128_t</span><span class="special">).</span><span class="identifier">name</span><span class="special">()</span> <span class="special">&lt;&lt;</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span><span class="special">;</span>
  41 </pre>
  42 <p>
  43         This prevent using the existing tests for Boost.Math distributions, (unless
  44         a few lines are commented out) and if a MACRO BOOST_MATH_INSTRUMENT controlling
  45         them is defined then some diagnostic displays in Boost.Math will not work.
  46       </p>
  47 <p>
  48         However this was only used for display purposes and could be commented out
  49         until this was fixed in GCC 5.
  50       </p>
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  56 <tr><td align="left" valign="top"><p>
  57           Not all managed names can be <span class="bold"><strong>displayed</strong></span>
  58           using <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">cout</span></code>.
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