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24 | </div> | |
25 | <div class="section"> | |
26 | <div class="titlepage"><div><div><h4 class="title"> | |
27 | <a name="boost_multiprecision.tut.misc.visualizers"></a><a class="link" href="visualizers.html" title="Visual C++ Debugger Visualizers">Visual C++ | |
28 | Debugger Visualizers</a> | |
29 | </h4></div></div></div> | |
30 | <p> | |
31 | Let's face it debugger multiprecision numbers is hard - simply because | |
32 | we can't easily inspect the value of the numbers. Visual C++ provides a | |
33 | partial solution in the shape of "visualizers" which provide | |
34 | improved views of complex data structures, these visualizers need to be | |
35 | added to the <code class="computeroutput"><span class="special">[</span><span class="identifier">Visualizer</span><span class="special">]</span></code> section of <code class="computeroutput"><span class="identifier">autoexp</span><span class="special">.</span><span class="identifier">dat</span></code> | |
36 | located in the <code class="computeroutput"><span class="identifier">Common7</span><span class="special">/</span><span class="identifier">Packages</span><span class="special">/</span><span class="identifier">Debugger</span></code> | |
37 | directory of your Visual Studio installation. The actual visualizer code | |
38 | is in the sandbox <a href="https://svn.boost.org/svn/boost/sandbox/boost_docs/subprojects/DebuggerVisualizers/multiprecision.vis.txt" target="_top">here</a> | |
39 | - just cut and paste the code into your <code class="computeroutput"><span class="identifier">autoexp</span><span class="special">.</span><span class="identifier">dat</span></code> | |
40 | file. | |
41 | </p> | |
42 | <div class="note"><table border="0" summary="Note"> | |
43 | <tr> | |
44 | <td rowspan="2" align="center" valign="top" width="25"><img alt="[Note]" src="../../../../../../../doc/src/images/note.png"></td> | |
45 | <th align="left">Note</th> | |
46 | </tr> | |
47 | <tr><td align="left" valign="top"><p> | |
48 | These visualizers have only been tested with VC10, also given the ability | |
49 | of buggy visualizers to crash your Visual C++ debugger, make sure you | |
50 | back up <code class="computeroutput"><span class="identifier">autoexp</span><span class="special">.</span><span class="identifier">dat</span></code> file before using these!! | |
51 | </p></td></tr> | |
52 | </table></div> | |
53 | <p> | |
54 | The first visualizer provides improved views of <code class="computeroutput"><span class="identifier">debug_adaptor</span></code>: | |
55 | </p> | |
56 | <p> | |
57 | <span class="inlinemediaobject"><img src="../../../../debugger1.png"></span> | |
58 | </p> | |
59 | <p> | |
60 | The next visualizer provides improved views of cpp_int: small numbers are | |
61 | displayed as actual values, while larger numbers are displayed as an array | |
62 | of hexadecimal parts, with the most significant part first. | |
63 | </p> | |
64 | <p> | |
65 | Here's what it looks like for small values: | |
66 | </p> | |
67 | <p> | |
68 | <span class="inlinemediaobject"><img src="../../../../debugger4.png"></span> | |
69 | </p> | |
70 | <p> | |
71 | And for larger values: | |
72 | </p> | |
73 | <p> | |
74 | <span class="inlinemediaobject"><img src="../../../../debugger5.png"></span> | |
75 | </p> | |
76 | <p> | |
77 | There is also a <code class="computeroutput"><span class="special">~</span><span class="identifier">raw</span></code> | |
78 | child member that lets you see the actual members of the class: | |
79 | </p> | |
80 | <p> | |
81 | <span class="inlinemediaobject"><img src="../../../../debugger6.png"></span> | |
82 | </p> | |
83 | <p> | |
84 | The visualizer for <code class="computeroutput"><span class="identifier">cpp_dec_float</span></code> | |
85 | shows the first few digits of the value in the preview field, and the full | |
86 | array of digits when you expand the view. As before the <code class="computeroutput"><span class="special">~</span><span class="identifier">raw</span></code> child gives you access to the actual | |
87 | data members: | |
88 | </p> | |
89 | <p> | |
90 | <span class="inlinemediaobject"><img src="../../../../debugger7.png"></span> | |
91 | </p> | |
92 | </div> | |
93 | <table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> | |
94 | <td align="left"></td> | |
95 | <td align="right"><div class="copyright-footer">Copyright © 2002-2013 John Maddock and Christopher Kormanyos<p> | |
96 | Distributed under the Boost Software License, Version 1.0. (See accompanying | |
97 | 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>) | |
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