<!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/vecmat/spds.c Source File</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 href="files.html"><span>Files</span></a></li>
<li><a href="dirs.html"><span>Directories</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
<li><a href="globals.html"><span>Globals</span></a></li>
</ul>
</div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="dir_23046874d7fed141927c769a66d8e3a5.html">src</a> </li>
<li class="navelem"><a class="el" href="dir_9706e2f7b84d8f85001c7784fc3e51fe.html">vecmat</a> </li>
</ul>
</div>
</div>
<div class="header">
<div class="headertitle">
<div class="title">spds.c</div> </div>
</div>
<div class="contents">
<a href="spds_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include "<a class="code" href="dsdpsys_8h.html" title="Error handling, printing, and profiling.">dsdpsys.h</a>"</span>
<a name="l00002"></a>00002 <span class="preprocessor">#include "<a class="code" href="dsdpdsmat__impl_8h.html" title="Structure of function pointers that each SDP Delta S matrix type (sparse, dense, diagonal, ...) must implement.">dsdpdsmat_impl.h</a>"</span>
<a name="l00003"></a>00003
<a name="l00008"></a>00008 <span class="keyword">typedef</span> <span class="keyword">struct </span>{
<a name="l00009"></a>00009 <span class="keywordtype">int</span> n;
<a name="l00010"></a>00010 <span class="keywordtype">double</span> *an;
<a name="l00011"></a>00011 <span class="keywordtype">int</span> *col;
<a name="l00012"></a>00012 <span class="keywordtype">int</span> *nnz;
<a name="l00013"></a>00013 } spdsmat;
<a name="l00014"></a>00014
<a name="l00015"></a>00015 <span class="keyword">static</span> <span class="keywordtype">int</span> SpSymMatSetURValuesP(<span class="keywordtype">void</span>*DS, <span class="keywordtype">double</span> v[], <span class="keywordtype">int</span> nn, <span class="keywordtype">int</span> n){
<a name="l00016"></a>00016 spdsmat*ds=(spdsmat*)DS;
<a name="l00017"></a>00017 <span class="keywordtype">int</span> i,j,k1,k2,*nnz=ds->nnz,*col=ds->col;
<a name="l00018"></a>00018 <span class="keywordtype">double</span> *an=ds->an;
<a name="l00019"></a>00019 <span class="keywordflow">for</span> (i=0;i<n;i++,nnz++){
<a name="l00020"></a>00020 k1=*nnz; k2=*(nnz+1);
<a name="l00021"></a>00021 <span class="keywordflow">for</span> (j=k1;j<k2;j++,an++,col++){
<a name="l00022"></a>00022 <span class="keywordflow">if</span> ((*col)==i){ *an = v[*col]/2;}
<a name="l00023"></a>00023 <span class="keywordflow">else</span> { *an = v[*col]; }
<a name="l00024"></a>00024 }
<a name="l00025"></a>00025 v+=i+1;
<a name="l00026"></a>00026 }
<a name="l00027"></a>00027 <span class="keywordflow">return</span> 0;
<a name="l00028"></a>00028 }
<a name="l00029"></a>00029
<a name="l00030"></a>00030 <span class="keyword">static</span> <span class="keywordtype">int</span> SpSymMatSetURValuesU(<span class="keywordtype">void</span>*DS, <span class="keywordtype">double</span> v[], <span class="keywordtype">int</span> nn, <span class="keywordtype">int</span> n){
<a name="l00031"></a>00031 spdsmat*ds=(spdsmat*)DS;
<a name="l00032"></a>00032 <span class="keywordtype">int</span> i,j,k1,k2,*nnz=ds->nnz,*col=ds->col;
<a name="l00033"></a>00033 <span class="keywordtype">double</span> *an=ds->an;
<a name="l00034"></a>00034 <span class="keywordflow">for</span> (i=0;i<n;i++,nnz++){
<a name="l00035"></a>00035 k1=*nnz; k2=*(nnz+1);
<a name="l00036"></a>00036 <span class="keywordflow">for</span> (j=k1;j<k2;j++,an++,col++){
<a name="l00037"></a>00037 <span class="keywordflow">if</span> ((*col)==i){ *an = v[*col]/2;}
<a name="l00038"></a>00038 <span class="keywordflow">else</span> { *an = v[*col]; }
<a name="l00039"></a>00039 }
<a name="l00040"></a>00040 v+=n;
<a name="l00041"></a>00041 }
<a name="l00042"></a>00042 <span class="keywordflow">return</span> 0;
<a name="l00043"></a>00043 }
<a name="l00044"></a>00044
<a name="l00045"></a>00045 <span class="keyword">static</span> <span class="keywordtype">int</span> SpSymMatView(<span class="keywordtype">void</span> *DS){
<a name="l00046"></a>00046 spdsmat*ds=(spdsmat*)DS;
<a name="l00047"></a>00047 <span class="keywordtype">int</span> i,j,k1,k2,n=ds->n,*nnz=ds->nnz,*col=ds->col;
<a name="l00048"></a>00048 <span class="keywordtype">double</span> *an=ds->an;
<a name="l00049"></a>00049 <span class="keywordflow">for</span> (i=0;i<n;i++){
<a name="l00050"></a>00050 k1=nnz[i]; k2=nnz[i+1];
<a name="l00051"></a>00051 printf(<span class="stringliteral">"Row %d: "</span>,i);
<a name="l00052"></a>00052 <span class="keywordflow">for</span> (j=k1;j<k2;j++){
<a name="l00053"></a>00053 <span class="keywordflow">if</span> (col[j]==i){ printf(<span class="stringliteral">"%d: %4.4f"</span>,col[j],2*an[j]); }
<a name="l00054"></a>00054 <span class="keywordflow">else</span> { printf(<span class="stringliteral">"%d: %4.4f"</span>,col[j],an[j]);}
<a name="l00055"></a>00055 }
<a name="l00056"></a>00056 printf(<span class="stringliteral">"\n"</span>);
<a name="l00057"></a>00057 }
<a name="l00058"></a>00058 <span class="keywordflow">return</span> 0;
<a name="l00059"></a>00059 }
<a name="l00060"></a>00060 <span class="comment">/*</span>
<a name="l00061"></a>00061 <span class="comment">static int SpSymMatShiftDiagonal(void *DS, double dd){</span>
<a name="l00062"></a>00062 <span class="comment"> spdsmat*ds=(spdsmat*)DS;</span>
<a name="l00063"></a>00063 <span class="comment"> int i,n=ds->n,*nnz=ds->nnz;</span>
<a name="l00064"></a>00064 <span class="comment"> double *an=ds->an;</span>
<a name="l00065"></a>00065 <span class="comment"> for (i=0;i<n;i++){</span>
<a name="l00066"></a>00066 <span class="comment"> an[nnz[i+1]-1] += dd/2;</span>
<a name="l00067"></a>00067 <span class="comment"> }</span>
<a name="l00068"></a>00068 <span class="comment"> return 0;</span>
<a name="l00069"></a>00069 <span class="comment">}</span>
<a name="l00070"></a>00070 <span class="comment">*/</span>
<a name="l00071"></a>00071 <span class="keyword">static</span> <span class="keywordtype">int</span> SpSymMatDestroy(<span class="keywordtype">void</span> *DS){
<a name="l00072"></a>00072 spdsmat*ds=(spdsmat*)DS;
<a name="l00073"></a>00073 <span class="keywordtype">int</span> info;
<a name="l00074"></a>00074 DSDPFREE(&ds->nnz,&info);<span class="keywordflow">if</span> (info) <span class="keywordflow">return</span> 1;
<a name="l00075"></a>00075 DSDPFREE(&ds->col,&info);<span class="keywordflow">if</span> (info) <span class="keywordflow">return</span> 1;
<a name="l00076"></a>00076 DSDPFREE(&ds->an,&info);<span class="keywordflow">if</span> (info) <span class="keywordflow">return</span> 1;
<a name="l00077"></a>00077 DSDPFREE(&ds,&info);<span class="keywordflow">if</span> (info) <span class="keywordflow">return</span> 1;
<a name="l00078"></a>00078 <span class="keywordflow">return</span> 0;
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keyword">static</span> <span class="keywordtype">int</span> SpSymMatGetSize(<span class="keywordtype">void</span> *DS, <span class="keywordtype">int</span>*n){
<a name="l00082"></a>00082 spdsmat*ds=(spdsmat*)DS;
<a name="l00083"></a>00083 *n=ds->n;
<a name="l00084"></a>00084 <span class="keywordflow">return</span> 0;
<a name="l00085"></a>00085 }
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keyword">static</span> <span class="keywordtype">int</span> SpSymMatZero(<span class="keywordtype">void</span>*DS){
<a name="l00088"></a>00088 spdsmat*ds=(spdsmat*)DS;
<a name="l00089"></a>00089 <span class="keywordtype">int</span> nn=ds->nnz[ds->n];
<a name="l00090"></a>00090 <span class="keywordtype">double</span> *an=ds->an;
<a name="l00091"></a>00091 memset((<span class="keywordtype">void</span>*)an,0,nn*<span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l00092"></a>00092 <span class="keywordflow">return</span> 0;
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keyword">static</span> <span class="keywordtype">int</span> SpSymMatMult(<span class="keywordtype">void</span>*DS, <span class="keywordtype">double</span> x[], <span class="keywordtype">double</span> y[], <span class="keywordtype">int</span> n){
<a name="l00096"></a>00096 spdsmat*ds=(spdsmat*)DS;
<a name="l00097"></a>00097 <span class="keywordtype">int</span> i,j,k1,k2,*nnz=ds->nnz,*col=ds->col;
<a name="l00098"></a>00098 <span class="keywordtype">double</span> *an=ds->an;
<a name="l00099"></a>00099 memset((<span class="keywordtype">void</span>*)y,0,n*<span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));
<a name="l00100"></a>00100 <span class="keywordflow">for</span> (i=0;i<n;i++,nnz++){
<a name="l00101"></a>00101 k1=*nnz; k2=*(nnz+1);
<a name="l00102"></a>00102 <span class="keywordflow">for</span> (j=k1;j<k2;j++,col++,an++){
<a name="l00103"></a>00103 y[*col] += x[i] * (*an);
<a name="l00104"></a>00104 y[i] += x[*col] * (*an);
<a name="l00105"></a>00105 }
<a name="l00106"></a>00106 }
<a name="l00107"></a>00107 <span class="keywordflow">return</span> 0;
<a name="l00108"></a>00108 }
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keyword">static</span> <span class="keywordtype">int</span> SpSymMatVecVec(<span class="keywordtype">void</span>*DS, <span class="keywordtype">double</span> x[], <span class="keywordtype">int</span> n, <span class="keywordtype">double</span> *vAv){
<a name="l00111"></a>00111 spdsmat*ds=(spdsmat*)DS;
<a name="l00112"></a>00112 <span class="keywordtype">int</span> i,j,k1,k2,*nnz=ds->nnz,*col=ds->col;
<a name="l00113"></a>00113 <span class="keywordtype">double</span> vv,*an=ds->an;
<a name="l00114"></a>00114 *vAv=0;
<a name="l00115"></a>00115 <span class="keywordflow">for</span> (i=0;i<n;i++,nnz++){
<a name="l00116"></a>00116 k1=*nnz; k2=*(nnz+1);
<a name="l00117"></a>00117 vv=0;
<a name="l00118"></a>00118 <span class="keywordflow">for</span> (j=k1;j<k2;j++,col++,an++){
<a name="l00119"></a>00119 vv+=x[*col]*(*an);
<a name="l00120"></a>00120 }
<a name="l00121"></a>00121 *vAv+=vv*x[i]*2;
<a name="l00122"></a>00122 }
<a name="l00123"></a>00123 <span class="keywordflow">return</span> 0;
<a name="l00124"></a>00124 }
<a name="l00125"></a>00125 <span class="comment">/*</span>
<a name="l00126"></a>00126 <span class="comment">static int SpSymMatAddRow(void *DS, int row, double dd, double v[], int n){</span>
<a name="l00127"></a>00127 <span class="comment"> spdsmat*ds=(spdsmat*)DS;</span>
<a name="l00128"></a>00128 <span class="comment"> int j,k1,k2,*nnz=ds->nnz,*col=ds->col;</span>
<a name="l00129"></a>00129 <span class="comment"> double *an=ds->an;</span>
<a name="l00130"></a>00130 <span class="comment"> k1=nnz[row]; k2=nnz[row+1];</span>
<a name="l00131"></a>00131 <span class="comment"> for (j=k1;j<k2;j++){</span>
<a name="l00132"></a>00132 <span class="comment"> if (row==col[j]){ an[j] += dd*v[col[j]]/2; } </span>
<a name="l00133"></a>00133 <span class="comment"> else { an[j] += dd*v[col[j]]; }</span>
<a name="l00134"></a>00134 <span class="comment"> }</span>
<a name="l00135"></a>00135 <span class="comment"> return 0;</span>
<a name="l00136"></a>00136 <span class="comment">}</span>
<a name="l00137"></a>00137 <span class="comment">*/</span>
<a name="l00138"></a>00138 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">char</span>* dsmatname=<span class="stringliteral">"SPARSE, SYMMETRIC MATRIX"</span>;
<a name="l00139"></a>00139 <span class="keyword">static</span> <span class="keywordtype">int</span> DSDPDSSparseInitializeOpsP(<span class="keyword">struct</span> <a class="code" href="structDSDPDSMat__Ops.html" title="Symmetric Delta S matrix for one block in the semidefinite cone.">DSDPDSMat_Ops</a>* dsops){
<a name="l00140"></a>00140 <span class="keywordtype">int</span> info;
<a name="l00141"></a>00141 <span class="keywordflow">if</span> (!dsops) <span class="keywordflow">return</span> 0;
<a name="l00142"></a>00142 info=<a class="code" href="dsdpdsmat_8c.html#a956667007b1dada1d134e557b0feee9e" title="Set pointers to null.">DSDPDSMatOpsInitialize</a>(dsops); DSDPCHKERR(info);
<a name="l00143"></a>00143 dsops->matseturmat=SpSymMatSetURValuesP;
<a name="l00144"></a>00144 dsops->matview=SpSymMatView;
<a name="l00145"></a>00145 dsops->matdestroy=SpSymMatDestroy;
<a name="l00146"></a>00146 dsops->matgetsize=SpSymMatGetSize;
<a name="l00147"></a>00147 dsops->matzeroentries=SpSymMatZero;
<a name="l00148"></a>00148 dsops->matmult=SpSymMatMult;
<a name="l00149"></a>00149 dsops->matvecvec=SpSymMatVecVec;
<a name="l00150"></a>00150 dsops->id=6;
<a name="l00151"></a>00151 dsops->matname=dsmatname;
<a name="l00152"></a>00152 <span class="keywordflow">return</span> 0;
<a name="l00153"></a>00153 }
<a name="l00154"></a>00154 <span class="keyword">static</span> <span class="keywordtype">int</span> DSDPDSSparseInitializeOpsU(<span class="keyword">struct</span> <a class="code" href="structDSDPDSMat__Ops.html" title="Symmetric Delta S matrix for one block in the semidefinite cone.">DSDPDSMat_Ops</a>* dsops){
<a name="l00155"></a>00155 <span class="keywordtype">int</span> info;
<a name="l00156"></a>00156 <span class="keywordflow">if</span> (!dsops) <span class="keywordflow">return</span> 0;
<a name="l00157"></a>00157 info=<a class="code" href="dsdpdsmat_8c.html#a956667007b1dada1d134e557b0feee9e" title="Set pointers to null.">DSDPDSMatOpsInitialize</a>(dsops); DSDPCHKERR(info);
<a name="l00158"></a>00158 dsops->matseturmat=SpSymMatSetURValuesU;
<a name="l00159"></a>00159 dsops->matview=SpSymMatView;
<a name="l00160"></a>00160 dsops->matdestroy=SpSymMatDestroy;
<a name="l00161"></a>00161 dsops->matgetsize=SpSymMatGetSize;
<a name="l00162"></a>00162 dsops->matzeroentries=SpSymMatZero;
<a name="l00163"></a>00163 dsops->matmult=SpSymMatMult;
<a name="l00164"></a>00164 dsops->matvecvec=SpSymMatVecVec;
<a name="l00165"></a>00165 dsops->id=6;
<a name="l00166"></a>00166 dsops->matname=dsmatname;
<a name="l00167"></a>00167 <span class="keywordflow">return</span> 0;
<a name="l00168"></a>00168 }
<a name="l00169"></a>00169
<a name="l00170"></a>00170 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structDSDPDSMat__Ops.html" title="Symmetric Delta S matrix for one block in the semidefinite cone.">DSDPDSMat_Ops</a> tdsdsopsp;
<a name="l00171"></a>00171 <span class="keyword">static</span> <span class="keyword">struct </span><a class="code" href="structDSDPDSMat__Ops.html" title="Symmetric Delta S matrix for one block in the semidefinite cone.">DSDPDSMat_Ops</a> tdsdsopsu;
<a name="l00172"></a>00172 <span class="preprocessor">#undef __FUNCT__</span>
<a name="l00173"></a>00173 <span class="preprocessor"></span><span class="preprocessor">#define __FUNCT__ "DSDPCreateSparseDSMat"</span>
<a name="l00174"></a>00174 <span class="preprocessor"></span><span class="keywordtype">int</span> DSDPSparseMatCreatePattern2P(<span class="keywordtype">int</span> n, <span class="keywordtype">int</span> rnnz[], <span class="keywordtype">int</span> cols[], <span class="keywordtype">int</span> tnnz,<span class="keyword">struct</span> <a class="code" href="structDSDPDSMat__Ops.html" title="Symmetric Delta S matrix for one block in the semidefinite cone.">DSDPDSMat_Ops</a>* *dsmatops, <span class="keywordtype">void</span>**dsmat){
<a name="l00175"></a>00175 <span class="keywordtype">int</span> i,info;
<a name="l00176"></a>00176 spdsmat*ds;
<a name="l00177"></a>00177 DSDPFunctionBegin;
<a name="l00178"></a>00178 DSDPCALLOC1(&ds,spdsmat,&info);DSDPCHKERR(info);
<a name="l00179"></a>00179 DSDPCALLOC2(&ds->nnz,<span class="keywordtype">int</span>,(n+1),&info);DSDPCHKERR(info);
<a name="l00180"></a>00180 ds->nnz[0]=0;
<a name="l00181"></a>00181 <span class="keywordflow">for</span> (i=0;i<n;i++) ds->nnz[i+1]=ds->nnz[i]+rnnz[i];
<a name="l00182"></a>00182 DSDPCALLOC2(&ds->col,<span class="keywordtype">int</span>,tnnz,&info);DSDPCHKERR(info);
<a name="l00183"></a>00183 DSDPCALLOC2(&ds->an,<span class="keywordtype">double</span>,tnnz,&info);DSDPCHKERR(info);
<a name="l00184"></a>00184 <span class="keywordflow">for</span> (i=0;i<tnnz;i++) ds->col[i]=cols[i];
<a name="l00185"></a>00185 info=DSDPDSSparseInitializeOpsP(&tdsdsopsp); DSDPCHKERR(info);
<a name="l00186"></a>00186 *dsmatops=&tdsdsopsp;
<a name="l00187"></a>00187 *dsmat=(<span class="keywordtype">void</span>*)ds;
<a name="l00188"></a>00188 DSDPFunctionReturn(0);
<a name="l00189"></a>00189 }
<a name="l00190"></a>00190
<a name="l00191"></a>00191 <span class="preprocessor">#undef __FUNCT__</span>
<a name="l00192"></a>00192 <span class="preprocessor"></span><span class="preprocessor">#define __FUNCT__ "DSDPCreateSparseDSMatU"</span>
<a name="l00193"></a>00193 <span class="preprocessor"></span><span class="keywordtype">int</span> DSDPSparseMatCreatePattern2U(<span class="keywordtype">int</span> n, <span class="keywordtype">int</span> rnnz[], <span class="keywordtype">int</span> cols[], <span class="keywordtype">int</span> tnnz,<span class="keyword">struct</span> <a class="code" href="structDSDPDSMat__Ops.html" title="Symmetric Delta S matrix for one block in the semidefinite cone.">DSDPDSMat_Ops</a>* *dsmatops, <span class="keywordtype">void</span>**dsmat){
<a name="l00194"></a>00194 <span class="keywordtype">int</span> i,info;
<a name="l00195"></a>00195 spdsmat*ds;
<a name="l00196"></a>00196 DSDPFunctionBegin;
<a name="l00197"></a>00197 DSDPCALLOC1(&ds,spdsmat,&info);DSDPCHKERR(info);
<a name="l00198"></a>00198 DSDPCALLOC2(&ds->nnz,<span class="keywordtype">int</span>,(n+1),&info);DSDPCHKERR(info);
<a name="l00199"></a>00199 ds->nnz[0]=0;
<a name="l00200"></a>00200 <span class="keywordflow">for</span> (i=0;i<n;i++) ds->nnz[i+1]=ds->nnz[i]+rnnz[i];
<a name="l00201"></a>00201 DSDPCALLOC2(&ds->col,<span class="keywordtype">int</span>,tnnz,&info);DSDPCHKERR(info);
<a name="l00202"></a>00202 DSDPCALLOC2(&ds->an,<span class="keywordtype">double</span>,tnnz,&info);DSDPCHKERR(info);
<a name="l00203"></a>00203 <span class="keywordflow">for</span> (i=0;i<tnnz;i++) ds->col[i]=cols[i];
<a name="l00204"></a>00204 info=DSDPDSSparseInitializeOpsU(&tdsdsopsu); DSDPCHKERR(info);
<a name="l00205"></a>00205 *dsmatops=&tdsdsopsu;
<a name="l00206"></a>00206 *dsmat=(<span class="keywordtype">void</span>*)ds;
<a name="l00207"></a>00207 DSDPFunctionReturn(0);
<a name="l00208"></a>00208 }
</pre></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>
