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<h3 class="section">8.69 <code>EOSHIFT</code> — End-off shift elements of an array</h3>
<p><a name="index-EOSHIFT-569"></a><a name="index-array_002c-shift-570"></a>
<dl>
<dt><em>Description</em>:<dd><code>EOSHIFT(ARRAY, SHIFT[, BOUNDARY, DIM])</code> performs an end-off shift on
elements of <var>ARRAY</var> along the dimension of <var>DIM</var>. If <var>DIM</var> is
omitted it is taken to be <code>1</code>. <var>DIM</var> is a scalar of type
<code>INTEGER</code> in the range of 1 \leq DIM \leq n) where n is the
rank of <var>ARRAY</var>. If the rank of <var>ARRAY</var> is one, then all elements of
<var>ARRAY</var> are shifted by <var>SHIFT</var> places. If rank is greater than one,
then all complete rank one sections of <var>ARRAY</var> along the given dimension are
shifted. Elements shifted out one end of each rank one section are dropped. If
<var>BOUNDARY</var> is present then the corresponding value of from <var>BOUNDARY</var>
is copied back in the other end. If <var>BOUNDARY</var> is not present then the
following are copied in depending on the type of <var>ARRAY</var>.
<p><table summary=""><tr align="left"><td valign="top" width="15%"><em>Array Type</em> </td><td valign="top" width="80%"><em>Boundary Value</em>
<br></td></tr><tr align="left"><td valign="top" width="15%">Numeric </td><td valign="top" width="80%">0 of the type and kind of <var>ARRAY</var>.
<br></td></tr><tr align="left"><td valign="top" width="15%">Logical </td><td valign="top" width="80%"><code>.FALSE.</code>.
<br></td></tr><tr align="left"><td valign="top" width="15%">Character(<var>len</var>) </td><td valign="top" width="80%"><var>len</var> blanks.
<br></td></tr></table>
<br><dt><em>Standard</em>:<dd>Fortran 95 and later
<br><dt><em>Class</em>:<dd>Transformational function
<br><dt><em>Syntax</em>:<dd><code>RESULT = EOSHIFT(ARRAY, SHIFT [, BOUNDARY, DIM])</code>
<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%">May be any type, not scalar.
<br></td></tr><tr align="left"><td valign="top" width="15%"><var>SHIFT</var> </td><td valign="top" width="70%">The type shall be <code>INTEGER</code>.
<br></td></tr><tr align="left"><td valign="top" width="15%"><var>BOUNDARY</var> </td><td valign="top" width="70%">Same type as <var>ARRAY</var>.
<br></td></tr><tr align="left"><td valign="top" width="15%"><var>DIM</var> </td><td valign="top" width="70%">The type shall be <code>INTEGER</code>.
<br></td></tr></table>
<br><dt><em>Return value</em>:<dd>Returns an array of same type and rank as the <var>ARRAY</var> argument.
<br><dt><em>Example</em>:<dd>
<pre class="smallexample"> program test_eoshift
integer, dimension(3,3) :: a
a = reshape( (/ 1, 2, 3, 4, 5, 6, 7, 8, 9 /), (/ 3, 3 /))
print '(3i3)', a(1,:)
print '(3i3)', a(2,:)
print '(3i3)', a(3,:)
a = EOSHIFT(a, SHIFT=(/1, 2, 1/), BOUNDARY=-5, DIM=2)
print *
print '(3i3)', a(1,:)
print '(3i3)', a(2,:)
print '(3i3)', a(3,:)
end program test_eoshift
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