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<head><title>psb_sp_getrow &#8212; Extract row(s) from a sparse matrix</title> 
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   <h4 class="subsectionHead"><span class="titlemark">6.25   </span> <a 
 id="x65-1020006.25"></a>psb_sp_getrow &#8212; Extract row(s) from a sparse matrix</h4>
                                                                  

                                                                  
   <pre class="verbatim" id="verbatim-58">
call&#x00A0;psb_sp_getrow(row,&#x00A0;a,&#x00A0;nz,&#x00A0;ia,&#x00A0;ja,&#x00A0;val,&#x00A0;info,&#x00A0;&amp;
&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&#x00A0;&amp;&#x00A0;append,&#x00A0;nzin,&#x00A0;lrw)
</pre>
<!--l. 1602--><p class="nopar" >
<!--l. 1604--><p class="indent" >
     <dl class="description"><dt class="description">
<span 
class="cmbx-10">Type:</span> </dt><dd 
class="description">Asynchronous.
     </dd><dt class="description">
<span 
class="cmbx-10">On Entry</span> </dt><dd 
class="description">
     </dd><dt class="description">
<span 
class="cmbx-10">row</span> </dt><dd 
class="description">The (first) row to be extracted.<br 
class="newline" />Scope:<span 
class="cmbx-10">local</span><br 
class="newline" />Type:<span 
class="cmbx-10">required</span><br 
class="newline" />Intent: <span 
class="cmbx-10">in</span>.<br 
class="newline" />Specified as: an integer <span 
class="cmmi-10">&#x003E; </span>0.
     </dd><dt class="description">
<span 
class="cmbx-10">a</span> </dt><dd 
class="description">the matrix from which to get rows.<br 
class="newline" />Scope:<span 
class="cmbx-10">local</span><br 
class="newline" />Type:<span 
class="cmbx-10">required</span><br 
class="newline" />Intent: <span 
class="cmbx-10">in</span>.<br 
class="newline" />Specified as: a structured data of type <a 
href="userhtmlsu6.html#spdata"><span 
class="cmtt-10">psb</span><span 
class="cmtt-10">_Tspmat</span><span 
class="cmtt-10">_type</span></a>.
     </dd><dt class="description">
<span 
class="cmbx-10">append</span> </dt><dd 
class="description">Whether to append or overwrite existing output.<br 
class="newline" />Scope:<span 
class="cmbx-10">local</span><br 
class="newline" />Type:<span 
class="cmbx-10">optional</span><br 
class="newline" />Intent: <span 
class="cmbx-10">in</span>.<br 
class="newline" />Specified as: a logical value default: false (overwrite).
     </dd><dt class="description">
<span 
class="cmbx-10">nzin</span> </dt><dd 
class="description">Input size to be appended to.<br 
class="newline" />Scope:<span 
class="cmbx-10">local</span><br 
class="newline" />Type:<span 
class="cmbx-10">optional</span><br 
class="newline" />Intent: <span 
class="cmbx-10">in</span>.<br 
class="newline" />Specified as: an integer <span 
class="cmmi-10">&#x003E; </span>0. When append is true, specifies how many
     entries in the output vectors are already filled.
     </dd><dt class="description">
<span 
class="cmbx-10">lrw</span> </dt><dd 
class="description">The last row to be extracted.<br 
class="newline" />Scope:<span 
class="cmbx-10">local</span><br 
class="newline" />Type:<span 
class="cmbx-10">optional</span><br 
class="newline" />Intent: <span 
class="cmbx-10">in</span>.<br 
class="newline" />Specified as: an integer <span 
class="cmmi-10">&#x003E; </span>0, default: <span 
class="cmmi-10">row</span>.
     </dd></dl>
                                                                  

                                                                  
<!--l. 1644--><p class="indent" >
     <dl class="description"><dt class="description">
<span 
class="cmbx-10">On Return</span> </dt><dd 
class="description">
     </dd><dt class="description">
<span 
class="cmbx-10">nz</span> </dt><dd 
class="description">the number of elements returned by this call.<br 
class="newline" />Scope:<span 
class="cmbx-10">local</span>.<br 
class="newline" />Type:<span 
class="cmbx-10">required</span>.<br 
class="newline" />Intent: <span 
class="cmbx-10">out</span>.<br 
class="newline" />Returned as: an integer scalar.
     </dd><dt class="description">
<span 
class="cmbx-10">ia</span> </dt><dd 
class="description">the row indices.<br 
class="newline" />Scope:<span 
class="cmbx-10">local</span>.<br 
class="newline" />Type:<span 
class="cmbx-10">required</span>.<br 
class="newline" />Intent: <span 
class="cmbx-10">inout</span>.<br 
class="newline" />Specified as: an integer array with the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">ALLOCATABLE</span></span></span> attribute.
     </dd><dt class="description">
<span 
class="cmbx-10">ja</span> </dt><dd 
class="description">the column indices of the elements to be inserted.<br 
class="newline" />Scope:<span 
class="cmbx-10">local</span>.<br 
class="newline" />Type:<span 
class="cmbx-10">required</span>.<br 
class="newline" />Intent: <span 
class="cmbx-10">inout</span>.<br 
class="newline" />Specified as: an integer array with the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">ALLOCATABLE</span></span></span> attribute.
     </dd><dt class="description">
<span 
class="cmbx-10">val</span> </dt><dd 
class="description">the elements to be inserted.<br 
class="newline" />Scope:<span 
class="cmbx-10">local</span>.<br 
class="newline" />Type:<span 
class="cmbx-10">required</span>.<br 
class="newline" />Intent: <span 
class="cmbx-10">inout</span>.<br 
class="newline" />Specified as: a real array with the <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">ALLOCATABLE</span></span></span> attribute.
     </dd><dt class="description">
<span 
class="cmbx-10">info</span> </dt><dd 
class="description">Error code.<br 
class="newline" />Scope: <span 
class="cmbx-10">local </span><br 
class="newline" />Type: <span 
class="cmbx-10">required </span><br 
class="newline" />Intent: <span 
class="cmbx-10">out</span>.<br 
class="newline" />An integer value; 0 means no error has been detected.</dd></dl>
<!--l. 1673--><p class="noindent" ><span 
class="cmbx-12">Notes</span>
     <ol  class="enumerate1" >
     <li 
  class="enumerate" id="x65-102002x1">The output <span 
class="cmmi-10">nz </span>is always the size of the output generated by the current
     call; thus, if <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">append=.true.</span></span></span>, the total output size will be <span 
class="cmmi-10">nzin </span>+ <span 
class="cmmi-10">nz</span>, with
     the newly extracted coefficients stored in entries <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">nzin+1:nzin+nz</span></span></span> of the
     array arguments;
     </li>
     <li 
  class="enumerate" id="x65-102004x2">When <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">append=.true.</span></span></span> the output arrays are reallocated as necessary;
     </li>
     <li 
  class="enumerate" id="x65-102006x3">The  row  and  column  indices  are  returned  in  the  local  numbering
     scheme;  if  the  global  numbering  is  desired,  the  user  may  employ  the
     <span class="obeylines-h"><span class="verb"><span 
class="cmtt-10">psb_loc_to_glob</span></span></span> routine on the output.</li></ol>
                                                                  

                                                                  
                                                                  

                                                                  
                                                                  

                                                                  
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