<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"> <!--Converted with LaTeX2HTML 2012 (1.2) original version by: Nikos Drakos, CBLU, University of Leeds * revised and updated by: Marcus Hennecke, Ross Moore, Herb Swan * with significant contributions from: Jens Lippmann, Marek Rouchal, Martin Wilck and others --> <HTML> <HEAD> <TITLE>psb_sp_getrow -- Extract row(s) from a sparse matrix</TITLE> <META NAME="description" CONTENT="psb_sp_getrow -- Extract row(s) from a sparse matrix"> <META NAME="keywords" CONTENT="userhtml"> <META NAME="resource-type" CONTENT="document"> <META NAME="distribution" CONTENT="global"> <META NAME="Generator" CONTENT="LaTeX2HTML v2012"> <META HTTP-EQUIV="Content-Style-Type" CONTENT="text/css"> <LINK REL="STYLESHEET" HREF="userhtml.css"> <LINK REL="next" HREF="node94.html"> <LINK REL="previous" HREF="node92.html"> <LINK REL="up" HREF="node68.html"> <LINK REL="next" HREF="node94.html"> </HEAD> <BODY > <!--Navigation Panel--> <A NAME="tex2html1405" HREF="node94.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html1401" HREF="node68.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html1395" HREF="node92.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html1403" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html1406" HREF="node94.html">psb_sizeof Memory</A> <B> Up:</B> <A NAME="tex2html1402" HREF="node68.html">Data management routines</A> <B> Previous:</B> <A NAME="tex2html1396" HREF="node92.html">psb_get_overlap Extract</A> <B> <A NAME="tex2html1404" HREF="node1.html">Contents</A></B> <BR> <BR> <!--End of Navigation Panel--> <H2><A NAME="SECTION000725000000000000000"> psb_sp_getrow -- Extract row(s) from a sparse matrix</A> </H2> <P> <PRE> call psb_sp_getrow(row, a, nz, ia, ja, val, info, & & append, nzin, lrw) </PRE> <P> <DL> <DT><STRONG>Type:</STRONG></DT> <DD>Asynchronous. </DD> <DT><STRONG><B>On Entry</B></STRONG></DT> <DD> </DD> <DT><STRONG>row</STRONG></DT> <DD>The (first) row to be extracted. <BR> Scope:<B>local</B> <BR> Type:<B>required</B> <BR> Intent: <B>in</B>. <BR> Specified as: an integer <IMG WIDTH="29" HEIGHT="30" ALIGN="MIDDLE" BORDER="0" SRC="img111.png" ALT="$>0$">. </DD> <DT><STRONG>a</STRONG></DT> <DD>the matrix from which to get rows. <BR> Scope:<B>local</B> <BR> Type:<B>required</B> <BR> Intent: <B>in</B>. <BR> Specified as: a structured data of type spdata<TT>psb_Tspmat_type</TT>. </DD> <DT><STRONG>append</STRONG></DT> <DD>Whether to append or overwrite existing output. <BR> Scope:<B>local</B> <BR> Type:<B>optional</B> <BR> Intent: <B>in</B>. <BR> Specified as: a logical value default: false (overwrite). </DD> <DT><STRONG>nzin</STRONG></DT> <DD>Input size to be appended to. <BR> Scope:<B>local</B> <BR> Type:<B>optional</B> <BR> Intent: <B>in</B>. <BR> Specified as: an integer <IMG WIDTH="29" HEIGHT="30" ALIGN="MIDDLE" BORDER="0" SRC="img111.png" ALT="$>0$">. When append is true, specifies how many entries in the output vectors are already filled. </DD> <DT><STRONG>lrw</STRONG></DT> <DD>The last row to be extracted. <BR> Scope:<B>local</B> <BR> Type:<B>optional</B> <BR> Intent: <B>in</B>. <BR> Specified as: an integer <IMG WIDTH="29" HEIGHT="30" ALIGN="MIDDLE" BORDER="0" SRC="img111.png" ALT="$>0$">, default: <IMG WIDTH="31" HEIGHT="14" ALIGN="BOTTOM" BORDER="0" SRC="img112.png" ALT="$row$">. <P> </DD> </DL> <P> <DL> <DT><STRONG><B>On Return</B></STRONG></DT> <DD> </DD> <DT><STRONG>nz</STRONG></DT> <DD>the number of elements returned by this call. <BR> Scope:<B>local</B>. <BR> Type:<B>required</B>. <BR> Intent: <B>out</B>. <BR> Returned as: an integer scalar. </DD> <DT><STRONG>ia</STRONG></DT> <DD>the row indices. <BR> Scope:<B>local</B>. <BR> Type:<B>required</B>. <BR> Intent: <B>inout</B>. <BR> Specified as: an integer array with the <code>ALLOCATABLE</code> attribute. </DD> <DT><STRONG>ja</STRONG></DT> <DD>the column indices of the elements to be inserted. <BR> Scope:<B>local</B>. <BR> Type:<B>required</B>. <BR> Intent: <B>inout</B>. <BR> Specified as: an integer array with the <code>ALLOCATABLE</code> attribute. </DD> <DT><STRONG>val</STRONG></DT> <DD>the elements to be inserted. <BR> Scope:<B>local</B>. <BR> Type:<B>required</B>. <BR> Intent: <B>inout</B>. <BR> Specified as: a real array with the <code>ALLOCATABLE</code> attribute. </DD> <DT><STRONG>info</STRONG></DT> <DD>Error code. <BR> Scope: <B>local</B> <BR> Type: <B>required</B> <BR> Intent: <B>out</B>. <BR> An integer value; 0 means no error has been detected. </DD> </DL> <P> <FONT SIZE="+1"><B>Notes</B></FONT> <OL> <LI>The output <IMG WIDTH="22" HEIGHT="14" ALIGN="BOTTOM" BORDER="0" SRC="img101.png" ALT="$nz$"> is always the size of the output generated by the current call; thus, if <code>append=.true.</code>, the total output size will be <IMG WIDTH="74" HEIGHT="29" ALIGN="MIDDLE" BORDER="0" SRC="img113.png" ALT="$nzin+nz$">, with the newly extracted coefficients stored in entries <code>nzin+1:nzin+nz</code> of the array arguments; </LI> <LI>When <code>append=.true.</code> the output arrays are reallocated as necessary; </LI> <LI>The row and column indices are returned in the local numbering scheme; if the global numbering is desired, the user may employ the <code>psb_loc_to_glob</code> routine on the output. </LI> </OL> <P> <HR> <!--Navigation Panel--> <A NAME="tex2html1405" HREF="node94.html"> <IMG WIDTH="37" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="next" SRC="next.png"></A> <A NAME="tex2html1401" HREF="node68.html"> <IMG WIDTH="26" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="up" SRC="up.png"></A> <A NAME="tex2html1395" HREF="node92.html"> <IMG WIDTH="63" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="previous" SRC="prev.png"></A> <A NAME="tex2html1403" HREF="node1.html"> <IMG WIDTH="65" HEIGHT="24" ALIGN="BOTTOM" BORDER="0" ALT="contents" SRC="contents.png"></A> <BR> <B> Next:</B> <A NAME="tex2html1406" HREF="node94.html">psb_sizeof Memory</A> <B> Up:</B> <A NAME="tex2html1402" HREF="node68.html">Data management routines</A> <B> Previous:</B> <A NAME="tex2html1396" HREF="node92.html">psb_get_overlap Extract</A> <B> <A NAME="tex2html1404" HREF="node1.html">Contents</A></B> <!--End of Navigation Panel--> </BODY> </HTML>