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<title>SuperLU: SRC/spanel_bmod.c File Reference</title>
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<h1>SRC/spanel_bmod.c File Reference</h1>Performs numeric block updates. <a href="#_details">More...</a>
<p>
<code>#include <stdio.h></code><br>
<code>#include <stdlib.h></code><br>
<code>#include "<a class="el" href="slu__sdefs_8h-source.html">slu_sdefs.h</a>"</code><br>
<table border="0" cellpadding="0" cellspacing="0">
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<tr><td colspan="2"><br><h2>Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="spanel__bmod_8c.html#a8bbeb2abbd5a10ac13fa9b48504691c">slsolve</a> (int, int, float *, float *)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Solves a dense UNIT lower triangular system. <a href="#a8bbeb2abbd5a10ac13fa9b48504691c"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="spanel__bmod_8c.html#b452e957171a4d0d9cfe6abb3d8a950c">smatvec</a> (int, int, int, float *, float *, float *)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Performs a dense matrix-vector multiply: Mxvec = Mxvec + M * vec. <a href="#b452e957171a4d0d9cfe6abb3d8a950c"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="spanel__bmod_8c.html#e6f7d2939a3b49f7b1022645be6dde4e">scheck_tempv</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="spanel__bmod_8c.html#1d0a6dc46d27416a6d5864dda1dba577">spanel_bmod</a> (const int m, const int w, const int jcol, const int nseg, float *dense, float *tempv, int *segrep, int *repfnz, <a class="el" href="structGlobalLU__t.html">GlobalLU_t</a> *Glu, <a class="el" href="structSuperLUStat__t.html">SuperLUStat_t</a> *stat)</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
<pre>
-- SuperLU routine (version 3.0) --
Univ. of California Berkeley, Xerox Palo Alto Research Center,
and Lawrence Berkeley National Lab.
October 15, 2003</pre><p>
<pre> Copyright (c) 1994 by Xerox Corporation. All rights reserved.</pre><p>
<pre> THIS MATERIAL IS PROVIDED AS IS, WITH ABSOLUTELY NO WARRANTY
EXPRESSED OR IMPLIED. ANY USE IS AT YOUR OWN RISK.</pre><p>
<pre> Permission is hereby granted to use or copy this program for any
purpose, provided the above notices are retained on all copies.
Permission to modify the code and to distribute modified code is
granted, provided the above notices are retained, and a notice that
the code was modified is included with the above copyright notice.
</pre> <hr><h2>Function Documentation</h2>
<a class="anchor" name="e6f7d2939a3b49f7b1022645be6dde4e"></a><!-- doxytag: member="spanel_bmod.c::scheck_tempv" ref="e6f7d2939a3b49f7b1022645be6dde4e" args="()" -->
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<td class="memname">void scheck_tempv </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"></td>
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<p>
</div>
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<a class="anchor" name="a8bbeb2abbd5a10ac13fa9b48504691c"></a><!-- doxytag: member="spanel_bmod.c::slsolve" ref="a8bbeb2abbd5a10ac13fa9b48504691c" args="(int, int, float *, float *)" -->
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<td class="memname">void slsolve </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>ldm</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>ncol</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>M</em>, </td>
</tr>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>rhs</em></td><td> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"></td>
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The unit lower triangular matrix is stored in a 2D array M(1:nrow,1:ncol). The solution will be returned in the rhs vector.
</div>
</div><p>
<a class="anchor" name="b452e957171a4d0d9cfe6abb3d8a950c"></a><!-- doxytag: member="spanel_bmod.c::smatvec" ref="b452e957171a4d0d9cfe6abb3d8a950c" args="(int, int, int, float *, float *, float *)" -->
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<td class="memname">void smatvec </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>ldm</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>nrow</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"> <em>ncol</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>M</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>vec</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>Mxvec</em></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td width="100%"></td>
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<p>
The input matrix is M(1:nrow,1:ncol); The product is returned in Mxvec[].
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</div><p>
<a class="anchor" name="1d0a6dc46d27416a6d5864dda1dba577"></a><!-- doxytag: member="spanel_bmod.c::spanel_bmod" ref="1d0a6dc46d27416a6d5864dda1dba577" args="(const int m, const int w, const int jcol, const int nseg, float *dense, float *tempv, int *segrep, int *repfnz, GlobalLU_t *Glu, SuperLUStat_t *stat)" -->
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<td class="memname">void spanel_bmod </td>
<td>(</td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>m</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>w</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>jcol</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">const int </td>
<td class="paramname"> <em>nseg</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>dense</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">float * </td>
<td class="paramname"> <em>tempv</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int * </td>
<td class="paramname"> <em>segrep</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">int * </td>
<td class="paramname"> <em>repfnz</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structGlobalLU__t.html">GlobalLU_t</a> * </td>
<td class="paramname"> <em>Glu</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype"><a class="el" href="structSuperLUStat__t.html">SuperLUStat_t</a> * </td>
<td class="paramname"> <em>stat</em></td><td> </td>
</tr>
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<td></td>
<td>)</td>
<td></td><td></td><td width="100%"></td>
</tr>
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<p>
<pre>
Purpose
=======</pre><p>
<pre> Performs numeric block updates (sup-panel) in topological order.
It features: col-col, 2cols-col, 3cols-col, and sup-col updates.
Special processing on the supernodal portion of L[*,j]</pre><p>
<pre> Before entering this routine, the original nonzeros in the panel
were already copied into the spa[m,w].</pre><p>
<pre> Updated/Output parameters-
dense[0:m-1,w]: L[*,j:j+w-1] and U[*,j:j+w-1] are returned
collectively in the m-by-w vector dense[*].
</pre>
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