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<h3 class="section">8.14 <code>ALLOCATED</code> — Status of an allocatable entity</h3>
<p><a name="index-ALLOCATED-392"></a><a name="index-allocation_002c-status-393"></a>
<dl>
<dt><em>Description</em>:<dd><code>ALLOCATED(ARRAY)</code> and <code>ALLOCATED(SCALAR)</code> check the allocation
status of <var>ARRAY</var> and <var>SCALAR</var>, respectively.
<br><dt><em>Standard</em>:<dd>Fortran 95 and later. Note, the <code>SCALAR=</code> keyword and allocatable
scalar entities are available in Fortran 2003 and later.
<br><dt><em>Class</em>:<dd>Inquiry function
<br><dt><em>Syntax</em>:<dd>
<p><table summary=""><tr align="left"><td valign="top" width="80%"><code>RESULT = ALLOCATED(ARRAY)</code>
<br></td></tr><tr align="left"><td valign="top" width="80%"><code>RESULT = ALLOCATED(SCALAR)</code>
<br></td></tr></table>
<br><dt><em>Arguments</em>:<dd>
<p><table summary=""><tr align="left"><td valign="top" width="15%"><var>ARRAY</var> </td><td valign="top" width="70%">The argument shall be an <code>ALLOCATABLE</code> array.
<br></td></tr><tr align="left"><td valign="top" width="15%"><var>SCALAR</var> </td><td valign="top" width="70%">The argument shall be an <code>ALLOCATABLE</code> scalar.
<br></td></tr></table>
<br><dt><em>Return value</em>:<dd>The return value is a scalar <code>LOGICAL</code> with the default logical
kind type parameter. If the argument is allocated, then the result is
<code>.TRUE.</code>; otherwise, it returns <code>.FALSE.</code>
<br><dt><em>Example</em>:<dd>
<pre class="smallexample"> program test_allocated
integer :: i = 4
real(4), allocatable :: x(:)
if (.not. allocated(x)) allocate(x(i))
end program test_allocated
</pre>
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