<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html><head><meta http-equiv="Content-Type" content="text/html;charset=UTF-8"> <title>SuperLU: SRC/cldperm.c File Reference</title> <link href="doxygen.css" rel="stylesheet" type="text/css"> <link href="tabs.css" rel="stylesheet" type="text/css"> </head><body> <!-- Generated by Doxygen 1.5.5 --> <div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li class="current"><a href="files.html"><span>Files</span></a></li> </ul> </div> </div> <div class="contents"> <h1>SRC/cldperm.c File Reference</h1>Finds a row permutation so that the matrix has large entries on the diagonal. <a href="#_details">More...</a> <p> <code>#include "<a class="el" href="slu__cdefs_8h-source.html">slu_cdefs.h</a>"</code><br> <table border="0" cellpadding="0" cellspacing="0"> <tr><td></td></tr> <tr><td colspan="2"><br><h2>Functions</h2></td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="cldperm_8c.html#1e6fb0c8dd36aef071ef165136ece781">mc64id_</a> (<a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> *)</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="cldperm_8c.html#1bf33c16a135cdc671242aed1705e1cd">mc64ad_</a> (<a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> *, <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> *, <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> *, <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a>[], <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a>[], double[], <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> *, <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a>[], <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> *, <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a>[], <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> *, double[], <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a>[], <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a>[])</td></tr> <tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="cldperm_8c.html#0ea12c5d13e30e24ad3e48e4ab521f4f">cldperm</a> (<a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> job, <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> n, <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> nnz, <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> colptr[], <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> adjncy[], <a class="el" href="structcomplex.html">complex</a> nzval[], <a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> *perm, float u[], float v[])</td></tr> </table> <hr><a name="_details"></a><h2>Detailed Description</h2> <pre> -- SuperLU routine (version 4.0) -- Lawrence Berkeley National Laboratory. June 30, 2009 </pre> <hr><h2>Function Documentation</h2> <a class="anchor" name="0ea12c5d13e30e24ad3e48e4ab521f4f"></a><!-- doxytag: member="cldperm.c::cldperm" ref="0ea12c5d13e30e24ad3e48e4ab521f4f" args="(int_t job, int_t n, int_t nnz, int_t colptr[], int_t adjncy[], complex nzval[], int_t *perm, float u[], float v[])" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int cldperm </td> <td>(</td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname"> <em>job</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname"> <em>n</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname"> <em>nnz</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname"> <em>colptr</em>[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname"> <em>adjncy</em>[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="structcomplex.html">complex</a> </td> <td class="paramname"> <em>nzval</em>[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> * </td> <td class="paramname"> <em>perm</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">float </td> <td class="paramname"> <em>u</em>[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">float </td> <td class="paramname"> <em>v</em>[]</td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td width="100%"></td> </tr> </table> </div> <div class="memdoc"> <p> <pre> Purpose =======</pre><p> <pre> CLDPERM finds a row permutation so that the matrix has large entries on the diagonal.</pre><p> <pre> Arguments =========</pre><p> <pre> job (input) int Control the action. Possible values for JOB are: = 1 : Compute a row permutation of the matrix so that the permuted matrix has as many entries on its diagonal as possible. The values on the diagonal are of arbitrary size. HSL subroutine MC21A/AD is used for this. = 2 : Compute a row permutation of the matrix so that the smallest value on the diagonal of the permuted matrix is maximized. = 3 : Compute a row permutation of the matrix so that the smallest value on the diagonal of the permuted matrix is maximized. The algorithm differs from the one used for JOB = 2 and may have quite a different performance. = 4 : Compute a row permutation of the matrix so that the sum of the diagonal entries of the permuted matrix is maximized. = 5 : Compute a row permutation of the matrix so that the product of the diagonal entries of the permuted matrix is maximized and vectors to scale the matrix so that the nonzero diagonal entries of the permuted matrix are one in absolute value and all the off-diagonal entries are less than or equal to one in absolute value. Restriction: 1 <= JOB <= 5.</pre><p> <pre> n (input) int The order of the matrix.</pre><p> <pre> nnz (input) int The number of nonzeros in the matrix.</pre><p> <pre> adjncy (input) int*, of size nnz The adjacency structure of the matrix, which contains the row indices of the nonzeros.</pre><p> <pre> colptr (input) int*, of size n+1 The pointers to the beginning of each column in ADJNCY.</pre><p> <pre> nzval (input) complex*, of size nnz The nonzero values of the matrix. nzval[k] is the value of the entry corresponding to adjncy[k]. It is not used if job = 1.</pre><p> <pre> perm (output) int*, of size n The permutation vector. perm[i] = j means row i in the original matrix is in row j of the permuted matrix.</pre><p> <pre> u (output) double*, of size n If job = 5, the natural logarithms of the row scaling factors.</pre><p> <pre> v (output) double*, of size n If job = 5, the natural logarithms of the column scaling factors. The scaled matrix B has entries b_ij = a_ij * exp(u_i + v_j). </pre> </div> </div><p> <a class="anchor" name="1bf33c16a135cdc671242aed1705e1cd"></a><!-- doxytag: member="cldperm.c::mc64ad_" ref="1bf33c16a135cdc671242aed1705e1cd" args="(int_t *, int_t *, int_t *, int_t[], int_t[], double[], int_t *, int_t[], int_t *, int_t[], int_t *, double[], int_t[], int_t[])" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> mc64ad_ </td> <td>(</td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> * </td> <td class="paramname">, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> * </td> <td class="paramname">, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> * </td> <td class="paramname">, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname">[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname">[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname">[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> * </td> <td class="paramname">, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname">[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> * </td> <td class="paramname">, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname">[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> * </td> <td class="paramname">, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname">[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname">[], </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> </td> <td class="paramname">[]</td><td> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td><td width="100%"></td> </tr> </table> </div> <div class="memdoc"> <p> </div> </div><p> <a class="anchor" name="1e6fb0c8dd36aef071ef165136ece781"></a><!-- doxytag: member="cldperm.c::mc64id_" ref="1e6fb0c8dd36aef071ef165136ece781" args="(int_t *)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> mc64id_ </td> <td>(</td> <td class="paramtype"><a class="el" href="slu__zdefs_8h.html#b6fd6105e64ed14a0c9281326f05e623">int_t</a> * </td> <td class="paramname"> </td> <td> ) </td> <td width="100%"></td> </tr> </table> </div> <div class="memdoc"> <p> </div> </div><p> </div> <hr size="1"><address style="text-align: right;"><small>Generated on Thu Aug 25 13:43:49 2011 for SuperLU by <a href="http://www.doxygen.org/index.html"> <img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.5 </small></address> </body> </html>