<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>DSDP: src/solver/dsdpcg.c File Reference</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.7.4 --> <div id="top"> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td style="padding-left: 0.5em;"> <div id="projectname">DSDP</div> </td> </tr> </tbody> </table> </div> <div id="navrow1" class="tabs"> <ul class="tablist"> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li class="current"><a 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name="func-members"></a> Functions</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="dsdpcg_8c.html#a6f1f6f35fc31a5bec5c06b152a4b4105">DSDPCGSolve</a> (<a class="el" href="structDSDP__C.html">DSDP</a> dsdp, <a class="el" href="structDSDPSchurMat__C.html">DSDPSchurMat</a> MM, <a class="el" href="dsdpvec_8h.html#a421243d35437ad44ded3c1e34198e8e9">DSDPVec</a> RHS, <a class="el" href="dsdpvec_8h.html#a421243d35437ad44ded3c1e34198e8e9">DSDPVec</a> X, double cgtol, <a class="el" href="dsdpbasictypes_8h.html#ae667f2bff3ab5ab0bc109fa76dc4ed65">DSDPTruth</a> *success)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Apply CG to solve for the step directions. <a href="#a6f1f6f35fc31a5bec5c06b152a4b4105"></a><br/></td></tr> </table> <hr/><a name="details" id="details"></a><h2>Detailed Description</h2> <div class="textblock"><p>Apply Conjugate Gradient method to solve the Schur matrix. </p> <p>Definition in file <a class="el" href="dsdpcg_8c_source.html">dsdpcg.c</a>.</p> </div><hr/><h2>Function Documentation</h2> <a class="anchor" id="a6f1f6f35fc31a5bec5c06b152a4b4105"></a><!-- doxytag: member="dsdpcg.c::DSDPCGSolve" ref="a6f1f6f35fc31a5bec5c06b152a4b4105" args="(DSDP dsdp, DSDPSchurMat MM, DSDPVec RHS, DSDPVec X, double cgtol, DSDPTruth *success)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">int DSDPCGSolve </td> <td>(</td> <td class="paramtype"><a class="el" href="structDSDP__C.html">DSDP</a> </td> <td class="paramname"><em>dsdp</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="structDSDPSchurMat__C.html">DSDPSchurMat</a> </td> <td class="paramname"><em>MM</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="dsdpvec_8h.html#a421243d35437ad44ded3c1e34198e8e9">DSDPVec</a> </td> <td class="paramname"><em>RHS</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="dsdpvec_8h.html#a421243d35437ad44ded3c1e34198e8e9">DSDPVec</a> </td> <td class="paramname"><em>X</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">double </td> <td class="paramname"><em>cgtol</em>, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype"><a class="el" href="dsdpbasictypes_8h.html#ae667f2bff3ab5ab0bc109fa76dc4ed65">DSDPTruth</a> * </td> <td class="paramname"><em>success</em> </td> </tr> <tr> <td></td> <td>)</td> <td></td><td></td> </tr> </table> </div> <div class="memdoc"> <p>Apply CG to solve for the step directions. </p> <dl><dt><b>Parameters:</b></dt><dd> <table class="params"> <tr><td class="paramname">dsdp</td><td>the solver </td></tr> <tr><td class="paramname">MM</td><td>matrix </td></tr> <tr><td class="paramname">RHS</td><td>right-hand side </td></tr> <tr><td class="paramname">X</td><td>solution </td></tr> <tr><td class="paramname">cgtol</td><td>accuracy </td></tr> <tr><td class="paramname">success</td><td>output whether a solution of suitable accuracy was found </td></tr> </table> </dd> </dl> <p>Definition at line <a class="el" href="dsdpcg_8c_source.html#l00239">239</a> of file <a class="el" href="dsdpcg_8c_source.html">dsdpcg.c</a>.</p> <p>Referenced by <a class="el" href="dualalg_8c_source.html#l00370">DSDPComputeDualStepDirections()</a>, and <a class="el" href="dualalg_8c_source.html#l00121">DSDPSolveDynamicRho()</a>.</p> </div> </div> </div> <hr class="footer"/><address class="footer"><small>Generated on Wed Jun 8 2011 for DSDP by  <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.7.4 </small></address> </body> </html>