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<head><title>psb_get_boundary — Extract list of boundary elements</title>
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<!--l. 1509--><div class="crosslinks"><p class="noindent">[<a
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<h4 class="subsectionHead"><span class="titlemark">6.23 </span> <a
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id="x63-1000006.23"></a>psb_get_boundary — Extract list of boundary elements</h4>
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<pre class="verbatim" id="verbatim-56">
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call psb_get_boundary(bndel, desc, info)
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</pre>
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<!--l. 1514--><p class="nopar" >
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<!--l. 1516--><p class="indent" >
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<dl class="description"><dt class="description">
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<span
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class="cmbx-10">Type:</span> </dt><dd
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class="description">Asynchronous.
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</dd><dt class="description">
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<span
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class="cmbx-10">On Entry</span> </dt><dd
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class="description">
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</dd><dt class="description">
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<span
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class="cmbx-10">desc</span> </dt><dd
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class="description">the communication descriptor.<br
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class="newline" />Scope:<span
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class="cmbx-10">local</span>.<br
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class="newline" />Type:<span
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class="cmbx-10">required</span>.<br
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class="newline" />Intent: <span
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class="cmbx-10">in</span>.<br
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class="newline" />Specified as: a structured data of type <a
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href="userhtmlsu5.html#descdata"><span
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class="cmtt-10">psb</span><span
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class="cmtt-10">_desc</span><span
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class="cmtt-10">_type</span></a>.</dd></dl>
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<!--l. 1526--><p class="indent" >
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<dl class="description"><dt class="description">
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<span
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class="cmbx-10">On Return</span> </dt><dd
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class="description">
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</dd><dt class="description">
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<span
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class="cmbx-10">bndel</span> </dt><dd
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class="description">The list of boundary elements on the calling process, in local numbering.<br
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class="newline" />Scope: <span
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class="cmbx-10">local </span><br
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class="newline" />Type: <span
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class="cmbx-10">required</span><br
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class="newline" />Intent: <span
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class="cmbx-10">out</span>.<br
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class="newline" />Specified as: a rank one array with the ALLOCATABLE attribute, of type
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integer.<br
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class="newline" />
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</dd><dt class="description">
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<span
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class="cmbx-10">info</span> </dt><dd
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class="description">Error code.<br
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class="newline" />Scope: <span
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class="cmbx-10">local </span><br
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class="newline" />Type: <span
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class="cmbx-10">required </span><br
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class="newline" />Intent: <span
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class="cmbx-10">out</span>.<br
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class="newline" />An integer value; 0 means no error has been detected.</dd></dl>
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<!--l. 1542--><p class="noindent" ><span
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class="cmbx-12">Notes</span>
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<ol class="enumerate1" >
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<li
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class="enumerate" id="x63-100002x1">If there are no boundary elements (i.e., if the local part of the connectivity
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graph is self-contained) the output vector is set to the “not allocated”
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state.
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</li>
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<li
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class="enumerate" id="x63-100004x2">Otherwise the size of <span class="obeylines-h"><span class="verb"><span
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class="cmtt-10">bndel</span></span></span> will be exactly equal to the number of
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boundary elements.</li></ol>
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