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<title>The GNU Fortran Compiler: SIN</title>

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<p>
Next: <a href="SIND.html#SIND" accesskey="n" rel="next">SIND</a>, Previous: <a href="SIGNAL.html#SIGNAL" accesskey="p" rel="prev">SIGNAL</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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<a name="SIN-_002d_002d_002d-Sine-function"></a>
<h3 class="section">9.247 <code>SIN</code> &mdash; Sine function</h3>
<a name="index-SIN"></a>
<a name="index-DSIN"></a>
<a name="index-CSIN"></a>
<a name="index-ZSIN"></a>
<a name="index-CDSIN"></a>
<a name="index-trigonometric-function_002c-sine"></a>
<a name="index-sine"></a>

<dl compact="compact">
<dt><em>Description</em>:</dt>
<dd><p><code>SIN(X)</code> computes the sine of <var>X</var>.
</p>
</dd>
<dt><em>Standard</em>:</dt>
<dd><p>Fortran 77 and later
</p>
</dd>
<dt><em>Class</em>:</dt>
<dd><p>Elemental function
</p>
</dd>
<dt><em>Syntax</em>:</dt>
<dd><p><code>RESULT = SIN(X)</code>
</p>
</dd>
<dt><em>Arguments</em>:</dt>
<dd><table>
<tr><td width="15%"><var>X</var></td><td width="70%">The type shall be <code>REAL</code> or
<code>COMPLEX</code>.</td></tr>
</table>

</dd>
<dt><em>Return value</em>:</dt>
<dd><p>The return value has same type and kind as <var>X</var>.
</p>
</dd>
<dt><em>Example</em>:</dt>
<dd><div class="smallexample">
<pre class="smallexample">program test_sin
  real :: x = 0.0
  x = sin(x)
end program test_sin
</pre></div>

</dd>
<dt><em>Specific names</em>:</dt>
<dd><table>
<tr><td width="20%">Name</td><td width="20%">Argument</td><td width="20%">Return type</td><td width="25%">Standard</td></tr>
<tr><td width="20%"><code>SIN(X)</code></td><td width="20%"><code>REAL(4) X</code></td><td width="20%"><code>REAL(4)</code></td><td width="25%">f77, gnu</td></tr>
<tr><td width="20%"><code>DSIN(X)</code></td><td width="20%"><code>REAL(8) X</code></td><td width="20%"><code>REAL(8)</code></td><td width="25%">f95, gnu</td></tr>
<tr><td width="20%"><code>CSIN(X)</code></td><td width="20%"><code>COMPLEX(4) X</code></td><td width="20%"><code>COMPLEX(4)</code></td><td width="25%">f95, gnu</td></tr>
<tr><td width="20%"><code>ZSIN(X)</code></td><td width="20%"><code>COMPLEX(8) X</code></td><td width="20%"><code>COMPLEX(8)</code></td><td width="25%">f95, gnu</td></tr>
<tr><td width="20%"><code>CDSIN(X)</code></td><td width="20%"><code>COMPLEX(8) X</code></td><td width="20%"><code>COMPLEX(8)</code></td><td width="25%">f95, gnu</td></tr>
</table>

</dd>
<dt><em>See also</em>:</dt>
<dd><p>Inverse function: <a href="ASIN.html#ASIN">ASIN</a>
Degrees function: <a href="SIND.html#SIND">SIND</a>
</p></dd>
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