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1 | <html> |
2 | <head> | |
3 | <meta http-equiv="Content-Type" content="text/html; charset=US-ASCII"> | |
4 | <title>typeinfo</title> | |
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12 | <body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> | |
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24 | </div> | |
25 | <div class="section"> | |
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"><<</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"><<</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> | |
51 | <div class="tip"><table border="0" summary="Tip"> | |
52 | <tr> | |
53 | <td rowspan="2" align="center" valign="top" width="25"><img alt="[Tip]" src="../../../../../../doc/src/images/tip.png"></td> | |
54 | <th align="left">Tip</th> | |
55 | </tr> | |
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>. | |
59 | </p></td></tr> | |
60 | </table></div> | |
61 | </div> | |
62 | <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> | |
63 | <td align="left"></td> | |
64 | <td align="right"><div class="copyright-footer">Copyright © 2006-2010, 2012-2014 Nikhar Agrawal, | |
65 | Anton Bikineev, Paul A. Bristow, Marco Guazzone, Christopher Kormanyos, Hubert | |
66 | Holin, Bruno Lalande, John Maddock, Jeremy Murphy, Johan Råde, Gautam Sewani, | |
67 | Benjamin Sobotta, Thijs van den Berg, Daryle Walker and Xiaogang Zhang<p> | |
68 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
69 | file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>) | |
70 | </p> | |
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76 | </div> | |
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78 | </html> |