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  25 <div class="section boost_typetraits_reference_add_volatile">
  26 <div class="titlepage"><div><div><h3 class="title">
  27 <a name="boost_typetraits.reference.add_volatile"></a><a class="link" href="add_volatile.html" title="add_volatile">add_volatile</a>
  28 </h3></div></div></div>
  29 <pre class="programlisting"><span class="keyword">template</span> <span class="special">&lt;</span><span class="keyword">class</span> <span class="identifier">T</span><span class="special">&gt;</span>
  30 <span class="keyword">struct</span> <span class="identifier">add_volatile</span>
  31 <span class="special">{</span>
  32    <span class="keyword">typedef</span> <em class="replaceable"><code>see-below</code></em> <span class="identifier">type</span><span class="special">;</span>
  33 <span class="special">};</span>
  34 </pre>
  35 <p>
  36         <span class="bold"><strong>type:</strong></span> The same type as <code class="computeroutput"><span class="identifier">T</span>
  37         <span class="keyword">volatile</span></code> for all <code class="computeroutput"><span class="identifier">T</span></code>.
  38       </p>
  39 <p>
  40         <span class="bold"><strong>C++ Standard Reference:</strong></span> 3.9.3.
  41       </p>
  42 <p>
  43         <span class="bold"><strong>Compiler Compatibility:</strong></span> If the compiler
  44         does not support partial specialization of class-templates then this template
  45         will compile, but the member <code class="computeroutput"><span class="identifier">type</span></code>
  46         will always be the same as type <code class="computeroutput"><span class="identifier">T</span></code>
  47         except where <a class="link" href="../category/transform.html#boost_typetraits.category.transform.broken_compiler_workarounds_">compiler
  48         workarounds</a> have been applied.
  49       </p>
  50 <p>
  51         <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"> <span class="preprocessor">#include</span>
  52         <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">/</span><span class="identifier">add_volatile</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
  53         or <code class="computeroutput"> <span class="preprocessor">#include</span> <span class="special">&lt;</span><span class="identifier">boost</span><span class="special">/</span><span class="identifier">type_traits</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
  54       </p>
  55 <div class="table">
  56 <a name="boost_typetraits.reference.add_volatile.examples"></a><p class="title"><b>Table&#160;1.16.&#160;Examples</b></p>
  57 <div class="table-contents"><table class="table" summary="Examples">
  58 <colgroup>
  59 <col>
  60 <col>
  61 </colgroup>
  62 <thead><tr>
  63 <th>
  64                 <p>
  65                   Expression
  66                 </p>
  67               </th>
  68 <th>
  69                 <p>
  70                   Result Type
  71                 </p>
  72               </th>
  73 </tr></thead>
  74 <tbody>
  75 <tr>
  76 <td>
  77                 <p>
  78                   <code class="computeroutput"><span class="identifier">add_volatile</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
  79                 </p>
  80               </td>
  81 <td>
  82                 <p>
  83                   <code class="computeroutput"><span class="keyword">int</span> <span class="keyword">volatile</span></code>
  84                 </p>
  85               </td>
  86 </tr>
  87 <tr>
  88 <td>
  89                 <p>
  90                   <code class="computeroutput"><span class="identifier">add_volatile</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&amp;&gt;::</span><span class="identifier">type</span></code>
  91                 </p>
  92               </td>
  93 <td>
  94                 <p>
  95                   <code class="computeroutput"><span class="keyword">int</span><span class="special">&amp;</span></code>
  96                 </p>
  97               </td>
  98 </tr>
  99 <tr>
 100 <td>
 101                 <p>
 102                   <code class="computeroutput"><span class="identifier">add_volatile</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">*&gt;::</span><span class="identifier">type</span></code>
 103                 </p>
 104               </td>
 105 <td>
 106                 <p>
 107                   <code class="computeroutput"><span class="keyword">int</span><span class="special">*</span>
 108                   <span class="keyword">volatile</span></code>
 109                 </p>
 110               </td>
 111 </tr>
 112 <tr>
 113 <td>
 114                 <p>
 115                   <code class="computeroutput"><span class="identifier">add_volatile</span><span class="special">&lt;</span><span class="keyword">int</span> <span class="keyword">const</span><span class="special">&gt;::</span><span class="identifier">type</span></code>
 116                 </p>
 117               </td>
 118 <td>
 119                 <p>
 120                   <code class="computeroutput"><span class="keyword">int</span> <span class="keyword">const</span>
 121                   <span class="keyword">volatile</span></code>
 122                 </p>
 123               </td>
 124 </tr>
 125 </tbody>
 126 </table></div>
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