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<title>The GNU Fortran Compiler: IMAGE_INDEX</title>
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<a name="IMAGE_005fINDEX"></a>
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<p>
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Next: <a href="INDEX-intrinsic.html#INDEX-intrinsic" accesskey="n" rel="next">INDEX intrinsic</a>, Previous: <a href="IERRNO.html#IERRNO" accesskey="p" rel="prev">IERRNO</a>, Up: <a href="Intrinsic-Procedures.html#Intrinsic-Procedures" accesskey="u" rel="up">Intrinsic Procedures</a> [<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="IMAGE_005fINDEX-_002d_002d_002d-Function-that-converts-a-cosubscript-to-an-image-index"></a>
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<h3 class="section">9.139 <code>IMAGE_INDEX</code> — Function that converts a cosubscript to an image index</h3>
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<a name="index-IMAGE_005fINDEX"></a>
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<a name="index-coarray_002c-IMAGE_005fINDEX"></a>
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<a name="index-images_002c-cosubscript-to-image-index-conversion"></a>
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<dl compact="compact">
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<dt><em>Description</em>:</dt>
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<dd><p>Returns the image index belonging to a cosubscript.
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</p>
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</dd>
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<dt><em>Standard</em>:</dt>
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<dd><p>Fortran 2008 and later
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</p>
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</dd>
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<dt><em>Class</em>:</dt>
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<dd><p>Inquiry function.
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</p>
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</dd>
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<dt><em>Syntax</em>:</dt>
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<dd><p><code>RESULT = IMAGE_INDEX(COARRAY, SUB)</code>
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</p>
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</dd>
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<dt><em>Arguments</em>: None.</dt>
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<dd><table>
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<tr><td width="15%"><var>COARRAY</var></td><td width="70%">Coarray of any type.</td></tr>
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<tr><td width="15%"><var>SUB</var></td><td width="70%">default integer rank-1 array of a size equal to
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the corank of <var>COARRAY</var>.</td></tr>
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</table>
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</dd>
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<dt><em>Return value</em>:</dt>
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<dd><p>Scalar default integer with the value of the image index which corresponds
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to the cosubscripts. For invalid cosubscripts the result is zero.
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</p>
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</dd>
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<dt><em>Example</em>:</dt>
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<dd><div class="smallexample">
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<pre class="smallexample">INTEGER :: array[2,-1:4,8,*]
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! Writes 28 (or 0 if there are fewer than 28 images)
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WRITE (*,*) IMAGE_INDEX (array, [2,0,3,1])
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</pre></div>
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</dd>
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<dt><em>See also</em>:</dt>
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<dd><p><a href="THIS_005fIMAGE.html#THIS_005fIMAGE">THIS_IMAGE</a>, <a href="NUM_005fIMAGES.html#NUM_005fIMAGES">NUM_IMAGES</a>
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</p></dd>
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