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+<hr>
+<a name="COUNT-_002d_002d_002d-Count-function"></a>
+<h3 class="section">8.78 <code>COUNT</code> &mdash; Count function</h3>
+<a name="index-COUNT"></a>
+<a name="index-array_002c-conditionally-count-elements"></a>
+<a name="index-array_002c-element-counting"></a>
+<a name="index-array_002c-number-of-elements"></a>
+
+<dl compact="compact">
+<dt><em>Description</em>:</dt>
+<dd>
+<p>Counts the number of <code>.TRUE.</code> elements in a logical <var>MASK</var>,
+or, if the <var>DIM</var> argument is supplied, counts the number of
+elements along each row of the array in the <var>DIM</var> direction.
+If the array has zero size, or all of the elements of <var>MASK</var> are
+<code>.FALSE.</code>, then the result is <code>0</code>.
+</p>
+</dd>
+<dt><em>Standard</em>:</dt>
+<dd><p>Fortran 90 and later, with <var>KIND</var> argument Fortran 2003 and later
+</p>
+</dd>
+<dt><em>Class</em>:</dt>
+<dd><p>Transformational function
+</p>
+</dd>
+<dt><em>Syntax</em>:</dt>
+<dd><p><code>RESULT = COUNT(MASK [, DIM, KIND])</code>
+</p>
+</dd>
+<dt><em>Arguments</em>:</dt>
+<dd><table>
+<tr><td width="15%"><var>MASK</var></td><td width="70%">The type shall be <code>LOGICAL</code>.</td></tr>
+<tr><td width="15%"><var>DIM</var></td><td width="70%">(Optional) The type shall be <code>INTEGER</code>.</td></tr>
+<tr><td width="15%"><var>KIND</var></td><td width="70%">(Optional) A scalar <code>INTEGER</code> constant
+expression indicating the kind parameter of the result.</td></tr>
+</table>
+
+</dd>
+<dt><em>Return value</em>:</dt>
+<dd><p>The return value is of type <code>INTEGER</code> and of kind <var>KIND</var>. If
+<var>KIND</var> is absent, the return value is of default integer kind.
+If <var>DIM</var> is present, the result is an array with a rank one less
+than the rank of <var>ARRAY</var>, and a size corresponding to the shape
+of <var>ARRAY</var> with the <var>DIM</var> dimension removed.
+</p>
+</dd>
+<dt><em>Example</em>:</dt>
+<dd><div class="smallexample">
+<pre class="smallexample">program test_count
+ integer, dimension(2,3) :: a, b
+ logical, dimension(2,3) :: mask
+ a = reshape( (/ 1, 2, 3, 4, 5, 6 /), (/ 2, 3 /))
+ b = reshape( (/ 0, 7, 3, 4, 5, 8 /), (/ 2, 3 /))
+ print '(3i3)', a(1,:)
+ print '(3i3)', a(2,:)
+ print *
+ print '(3i3)', b(1,:)
+ print '(3i3)', b(2,:)
+ print *
+ mask = a.ne.b
+ print '(3l3)', mask(1,:)
+ print '(3l3)', mask(2,:)
+ print *
+ print '(3i3)', count(mask)
+ print *
+ print '(3i3)', count(mask, 1)
+ print *
+ print '(3i3)', count(mask, 2)
+end program test_count
+</pre></div>
+</dd>
+</dl>
+
+
+
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