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210 lines
8.6 KiB
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210 lines
8.6 KiB
HTML
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<head><title>psb_sp_getrow — Extract row(s) from a sparse matrix</title>
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<h4 class="subsectionHead"><span class="titlemark">6.25 </span> <a
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id="x65-1020006.25"></a>psb_sp_getrow — Extract row(s) from a sparse matrix</h4>
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<div class="verbatim" id="verbatim-58">
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call psb_sp_getrow(row, a, nz, ia, ja, val, info, &
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 <br />              & append, nzin, lrw)
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</div>
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<!--l. 1602--><p class="nopar" >
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<!--l. 1604--><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">row</span> </dt><dd
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class="description">The (first) row to be extracted.<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: an integer <span
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class="cmmi-10">> </span>0.
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</dd><dt class="description">
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<span
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class="cmbx-10">a</span> </dt><dd
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class="description">the matrix from which to get rows.<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="userhtmlsu6.html#spdata"><span
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class="cmtt-10">psb</span><span
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class="cmtt-10">_Tspmat</span><span
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class="cmtt-10">_type</span></a>.
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</dd><dt class="description">
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<span
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class="cmbx-10">append</span> </dt><dd
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class="description">Whether to append or overwrite existing output.<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">optional</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 logical value default: false (overwrite).
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</dd><dt class="description">
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<span
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class="cmbx-10">nzin</span> </dt><dd
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class="description">Input size to be appended to.<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">optional</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: an integer <span
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class="cmmi-10">> </span>0. When append is true, specifies how many
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entries in the output vectors are already filled.
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</dd><dt class="description">
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<span
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class="cmbx-10">lrw</span> </dt><dd
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class="description">The last row to be extracted.<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">optional</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: an integer <span
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class="cmmi-10">> </span>0, default: <span
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class="cmmi-10">row</span>.
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</dd></dl>
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<!--l. 1644--><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">nz</span> </dt><dd
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class="description">the number of elements returned by this call.<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" />Returned as: an integer scalar.
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</dd><dt class="description">
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<span
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class="cmbx-10">ia</span> </dt><dd
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class="description">the row indices.<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">inout</span>.<br
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class="newline" />Specified as: an integer array with the <span class="obeylines-h"><span class="verb"><span
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class="cmtt-10">ALLOCATABLE</span></span></span> attribute.
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</dd><dt class="description">
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<span
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class="cmbx-10">ja</span> </dt><dd
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class="description">the column indices of the elements to be inserted.<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">inout</span>.<br
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class="newline" />Specified as: an integer array with the <span class="obeylines-h"><span class="verb"><span
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class="cmtt-10">ALLOCATABLE</span></span></span> attribute.
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</dd><dt class="description">
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<span
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class="cmbx-10">val</span> </dt><dd
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class="description">the elements to be inserted.<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">inout</span>.<br
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class="newline" />Specified as: a real array with the <span class="obeylines-h"><span class="verb"><span
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class="cmtt-10">ALLOCATABLE</span></span></span> attribute.
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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. 1673--><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="x65-102002x1">The output <span
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class="cmmi-10">nz </span>is always the size of the output generated by the current
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call; thus, if <span class="obeylines-h"><span class="verb"><span
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class="cmtt-10">append=.true.</span></span></span>, the total output size will be <span
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class="cmmi-10">nzin </span>+ <span
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class="cmmi-10">nz</span>, with
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the newly extracted coefficients stored in entries <span class="obeylines-h"><span class="verb"><span
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class="cmtt-10">nzin+1:nzin+nz</span></span></span> of the
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array arguments;
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</li>
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<li
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class="enumerate" id="x65-102004x2">When <span class="obeylines-h"><span class="verb"><span
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class="cmtt-10">append=.true.</span></span></span> the output arrays are reallocated as necessary;
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</li>
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<li
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class="enumerate" id="x65-102006x3">The row and column indices are returned in the local numbering
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scheme; if the global numbering is desired, the user may employ the
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<span class="obeylines-h"><span class="verb"><span
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class="cmtt-10">psb_loc_to_glob</span></span></span> routine on the output.</li></ol>
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<!--l. 1689--><div class="crosslinks"><p class="noindent">[<a
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href="userhtmlsu57.html" >next</a>] [<a
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href="userhtmlsu53.html" >prev</a>] [<a
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href="userhtmlsu53.html#tailuserhtmlsu53.html" >prev-tail</a>] [<a
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href="userhtmlsu54.html" >front</a>] [<a
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href="userhtmlsu32.html#userhtmlse7.html" >up</a>] </p></div>
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