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27 <a name="boost_typetraits.reference.is_complex"></a><a class="link" href="is_complex.html" title="is_complex">is_complex</a>
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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">is_complex</span> <span class="special">:</span> <span class="keyword">public</span> <em class="replaceable"><code><a class="link" href="integral_constant.html" title="integral_constant">true_type</a>-or-<a class="link" href="integral_constant.html" title="integral_constant">false_type</a></code></em> <span class="special">{};</span>
31 </pre>
32 <p>
33 <span class="bold"><strong>Inherits:</strong></span> If <code class="computeroutput"><span class="identifier">T</span></code>
34 is a complex number type then true (of type <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">complex</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code>
35 for some type <code class="computeroutput"><span class="identifier">U</span></code>), otherwise
36 false.
37 </p>
38 <p>
39 <span class="bold"><strong>C++ Standard Reference:</strong></span> 26.2.
40 </p>
41 <p>
42 <span class="bold"><strong>Compiler Compatibility:</strong></span> All current compilers
43 are supported by this trait.
44 </p>
45 <p>
46 <span class="bold"><strong>Header:</strong></span> <code class="computeroutput"> <span class="preprocessor">#include</span>
47 <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">is_complex</span><span class="special">.</span><span class="identifier">hpp</span><span class="special">&gt;</span></code>
48 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>
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