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<p>
Next: <a href="ASINH.html#ASINH" accesskey="n" rel="next">ASINH</a>, Previous: <a href="ASIN.html#ASIN" accesskey="p" rel="prev">ASIN</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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<hr>
<a name="ASIND-_002d_002d_002d-Arcsine-function_002c-degrees"></a>
<h3 class="section">9.20 <code>ASIND</code> &mdash; Arcsine function, degrees</h3>
<a name="index-ASIND"></a>
<a name="index-DASIND"></a>
<a name="index-trigonometric-function_002c-sine_002c-inverse_002c-degrees"></a>
<a name="index-sine_002c-inverse_002c-degrees"></a>

<dl compact="compact">
<dt><em>Description</em>:</dt>
<dd><p><code>ASIND(X)</code> computes the arcsine of its <var>X</var> in degrees (inverse of
<code>SIND(X)</code>).
</p>
<p>This function is for compatibility only and should be avoided in favor of
standard constructs wherever possible.
</p>
</dd>
<dt><em>Standard</em>:</dt>
<dd><p>GNU Extension, enabled with <samp>-fdec-math</samp>.
</p>
</dd>
<dt><em>Class</em>:</dt>
<dd><p>Elemental function
</p>
</dd>
<dt><em>Syntax</em>:</dt>
<dd><p><code>RESULT = ASIND(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 either <code>REAL</code> and a magnitude that is
less than or equal to one - or be <code>COMPLEX</code>.</td></tr>
</table>

</dd>
<dt><em>Return value</em>:</dt>
<dd><p>The return value is of the same type and kind as <var>X</var>.
The real part of the result is in degrees and lies in the range
<em>-90 \leq \Re \asin(x) \leq 90</em>.
</p>
</dd>
<dt><em>Example</em>:</dt>
<dd><div class="smallexample">
<pre class="smallexample">program test_asind
  real(8) :: x = 0.866_8
  x = asind(x)
end program test_asind
</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>ASIND(X)</code></td><td width="20%"><code>REAL(4) X</code></td><td width="20%"><code>REAL(4)</code></td><td width="25%">GNU Extension</td></tr>
<tr><td width="20%"><code>DASIND(X)</code></td><td width="20%"><code>REAL(8) X</code></td><td width="20%"><code>REAL(8)</code></td><td width="25%">GNU Extension</td></tr>
</table>

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


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