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+    <h1 id="firstHeading" class="firstHeading">csinf, csin, csinl</h1>            <table class="t-dcl-begin"> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;complex.h&gt;</code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">float complex       csinf( float complex z );</pre>
+</td> <td> (1) </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">double complex      csin( double complex z );</pre>
+</td> <td> (2) </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">long double complex csinl( long double complex z );</pre>
+</td> <td> (3) </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr> <tr class="t-dsc-header"> <th> Defined in header <code>&lt;tgmath.h&gt;</code> </th> <th> </th> <th> </th> </tr> <tr class="t-dcl t-since-c99"> <td> <pre data-language="c">#define sin( z )</pre>
+</td> <td> (4) </td> <td> <span class="t-mark-rev t-since-c99">(since C99)</span> </td> </tr>  </table> <div class="t-li1">
+<span class="t-li">1-3)</span> Computes the complex sine of <code>z</code>.</div> <div class="t-li1">
+<span class="t-li">4)</span> Type-generic macro: If <code>z</code> has type <code><span class="kw4">long</span> <span class="kw4">double</span> <a href="http://en.cppreference.com/w/c/numeric/complex/complex"><span class="kw743">complex</span></a></code>, <code>csinl</code> is called. if <code>z</code> has type <code><span class="kw4">double</span> <a href="http://en.cppreference.com/w/c/numeric/complex/complex"><span class="kw743">complex</span></a></code>, <code>csin</code> is called, if <code>z</code> has type <code><span class="kw4">float</span> <a href="http://en.cppreference.com/w/c/numeric/complex/complex"><span class="kw743">complex</span></a></code>, <code>csinf</code> is called. If <code>z</code> is real or integer, then the macro invokes the corresponding real function (<code>sinf</code>, <code><a href="http://en.cppreference.com/w/c/numeric/math/sin"><span class="kw669">sin</span></a></code>, <code>sinl</code>). If <code>z</code> is imaginary, then the macro invokes the corresponding real version of the function <code><a href="../math/sinh" title="c/numeric/math/sinh">sinh</a></code>, implementing the formula sin(iy) = i ∙ sinh(y), and the return type of the macro is imaginary.</div>  <h3 id="Parameters"> Parameters</h3> <table class="t-par-begin"> <tr class="t-par"> <td> z </td> <td> - </td> <td> complex argument </td>
+</tr>
+</table> <h3 id="Return_value"> Return value</h3> <p>If no errors occur, the complex sine of <code>z</code>.</p>
+<p>Errors and special cases are handled as if the operation is implemented by <code><span class="sy2">-</span>I <span class="sy2">*</span> <a href="http://en.cppreference.com/w/c/numeric/complex/csinh"><span class="kw808">csinh</span></a><span class="br0">(</span>I<span class="sy2">*</span>z<span class="br0">)</span></code></p>
+<h3 id="Notes"> Notes</h3> <p>The sine is an entire function on the complex plane, and has no branch cuts.  Mathematical definition of the sine is sin z =</p>
+<span><span>eiz-e-iz</span><span>/</span><span>2i</span></span> <h3 id="Example"> Example</h3> <div class="t-example"> <div class="c source-c"><pre data-language="c">#include &lt;stdio.h&gt;
+#include &lt;math.h&gt;
+#include &lt;complex.h&gt;
+ 
+int main(void)
+{
+    double complex z = csin(1);  // behaves like real sine along the real line
+    printf("sin(1+0i) = %f%+fi ( sin(1)=%f)\n", creal(z), cimag(z), sin(1));
+ 
+    double complex z2 = csin(I); // behaves like sinh along the imaginary line 
+    printf("sin(0+1i) = %f%+fi (sinh(1)=%f)\n", creal(z2), cimag(z2), sinh(1));
+}</pre></div> <p>Output:</p>
+<div class="text source-text"><pre data-language="c">sin(1+0i) = 0.841471+0.000000i ( sin(1)=0.841471)
+sin(0+1i) = 0.000000+1.175201i (sinh(1)=1.175201)</pre></div> </div> <h3 id="References"> References</h3>  <ul>
+<li> C17 standard (ISO/IEC 9899:2018): </li>
+<ul>
+<li> 7.3.5.5 The csin functions (p: 138-139) </li>
+<li> 7.25 Type-generic math &lt;tgmath.h&gt; (p: 272-273) </li>
+<li> G.7 Type-generic math &lt;tgmath.h&gt; (p: 397) </li>
+</ul>
+<li> C11 standard (ISO/IEC 9899:2011): </li>
+<ul>
+<li> 7.3.5.5 The csin functions (p: 191-192) </li>
+<li> 7.25 Type-generic math &lt;tgmath.h&gt; (p: 373-375) </li>
+<li> G.7 Type-generic math &lt;tgmath.h&gt; (p: 545) </li>
+</ul>
+<li> C99 standard (ISO/IEC 9899:1999): </li>
+<ul>
+<li> 7.3.5.5 The csin functions (p: 173) </li>
+<li> 7.22 Type-generic math &lt;tgmath.h&gt; (p: 335-337) </li>
+<li> G.7 Type-generic math &lt;tgmath.h&gt; (p: 480) </li>
+</ul>
+</ul>                 <h3 id="See_also"> See also</h3> <table class="t-dsc-begin"> <tr class="t-dsc"> <td> <div><a href="ccos" title="c/numeric/complex/ccos"> <span class="t-lines"><span>ccos</span><span>ccosf</span><span>ccosl</span></span></a></div>
+<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> computes the complex cosine <br> <span class="t-mark">(function)</span>  </td>
+</tr> <tr class="t-dsc"> <td> <div><a href="ctan" title="c/numeric/complex/ctan"> <span class="t-lines"><span>ctan</span><span>ctanf</span><span>ctanl</span></span></a></div>
+<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> computes the complex tangent <br> <span class="t-mark">(function)</span>  </td>
+</tr> <tr class="t-dsc"> <td> <div><a href="casin" title="c/numeric/complex/casin"> <span class="t-lines"><span>casin</span><span>casinf</span><span>casinl</span></span></a></div>
+<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> computes the complex arc sine <br> <span class="t-mark">(function)</span>  </td>
+</tr> <tr class="t-dsc"> <td> <div><a href="../math/sin" title="c/numeric/math/sin"> <span class="t-lines"><span>sin</span><span>sinf</span><span>sinl</span></span></a></div>
+<div><span class="t-lines"><span><span class="t-mark-rev t-since-c99">(C99)</span></span><span><span class="t-mark-rev t-since-c99">(C99)</span></span></span></div> </td> <td> computes sine (\({\small\sin{x} }\)sin(x)) <br> <span class="t-mark">(function)</span>  </td>
+</tr> <tr class="t-dsc"> <td colspan="2"> <span><a href="https://en.cppreference.com/w/cpp/numeric/complex/sin" title="cpp/numeric/complex/sin">C++ documentation</a></span> for <code>sin</code> </td>
+</tr> </table>           <div class="_attribution">
+  <p class="_attribution-p">
+    &copy; cppreference.com<br>Licensed under the Creative Commons Attribution-ShareAlike Unported License v3.0.<br>
+    <a href="https://en.cppreference.com/w/c/numeric/complex/csin" class="_attribution-link">https://en.cppreference.com/w/c/numeric/complex/csin</a>
+  </p>
+</div>