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<a name="ctan"></a>
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Next: <a href="ctanh.html#ctanh" accesskey="n" rel="next">ctanh</a>, Previous: <a href="csqrt.html#csqrt" accesskey="p" rel="prev">csqrt</a>, Up: <a href="Complex.html#Complex" accesskey="u" rel="up">Complex</a> &nbsp; [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
<a name="ctan_002c-ctanf_002d_002d_002dcomplex-tangent"></a>
<h3 class="section">2.22 <code>ctan</code>, <code>ctanf</code>&mdash;complex tangent</h3>
<a name="index-ctan"></a>
<a name="index-ctanf"></a>
<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;complex.h&gt;
double complex ctan(double complex <var>z</var>);
float complex ctanf(float complex <var>z</var>);

</pre></div>
<p><strong>Description</strong><br>
These functions compute the complex tangent of <var>z</var>.
</p>
<p><code>ctanf</code> is identical to <code>ctan</code>, except that it performs
its calculations on <code>floats complex</code>.
</p>
<br>
<p><strong>Returns</strong><br>
These functions return the complex tangent value.
</p>
<br>
<p><strong>Portability</strong><br>
<code>ctan</code> and <code>ctanf</code> are ISO C99
</p>
<br>



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