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<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="preprocessor">#include "numchol.h"</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="keyword">static</span> <span class="keywordtype">int</span> ChkXlist(xlist *xt,
<a name="l00004"></a>00004 <span class="keywordtype">int</span> ind)
<a name="l00005"></a>00005 {
<a name="l00006"></a>00006 <span class="keywordflow">return</span> (xt->port[ind]==xt->idep);
<a name="l00007"></a>00007 } <span class="comment">/* ChkXlist */</span>
<a name="l00008"></a>00008
<a name="l00009"></a>00009 <span class="keyword">static</span> <span class="keywordtype">void</span> XtClear(xlist *xt)
<a name="l00010"></a>00010 {
<a name="l00011"></a>00011 <span class="keywordtype">int</span> i,sze;
<a name="l00012"></a>00012
<a name="l00013"></a>00013 sze =xt->last;
<a name="l00014"></a>00014 xt->idep=xt->most+1;
<a name="l00015"></a>00015 xt->lowp=xt->idep;
<a name="l00016"></a>00016 xt->cure=sze;
<a name="l00017"></a>00017 xt->ntot=0;
<a name="l00018"></a>00018
<a name="l00019"></a>00019 <span class="keywordflow">for</span> (i=0; i<xt->idep; i++)
<a name="l00020"></a>00020 xt->head[i]=xt->last;
<a name="l00021"></a>00021
<a name="l00022"></a>00022 for (i=0; i<sze; i++) {
<a name="l00023"></a>00023 xt->port[i]=xt->idep;
<a name="l00024"></a>00024 xt->fwrd[i]=xt->last;
<a name="l00025"></a>00025 xt->bwrd[i]=xt->last;
<a name="l00026"></a>00026 }
<a name="l00027"></a>00027 } <span class="comment">/* XtClear */</span>
<a name="l00028"></a>00028
<a name="l00029"></a>00029 <span class="keywordtype">int</span> XtAlloc(<span class="keywordtype">int</span> last,
<a name="l00030"></a>00030 <span class="keywordtype">int</span> most,
<a name="l00031"></a>00031 <span class="keywordtype">char</span> *info,
<a name="l00032"></a>00032 xlist**rr)
<a name="l00033"></a>00033 {
<a name="l00034"></a>00034 xlist *r;
<a name="l00035"></a>00035 <span class="keywordtype">int</span> ierr=0;
<a name="l00036"></a>00036
<a name="l00037"></a>00037 r=(xlist*) calloc(1,<span class="keyword">sizeof</span>(xlist));
<a name="l00038"></a>00038 <span class="keywordflow">if</span> (!r) ExitProc(OutOfSpc,info);
<a name="l00039"></a>00039
<a name="l00040"></a>00040
<a name="l00041"></a>00041 r->loca=TRUE;
<a name="l00042"></a>00042 r->last=last;
<a name="l00043"></a>00043 r->most=most;
<a name="l00044"></a>00044 r->ntot=0;
<a name="l00045"></a>00045
<a name="l00046"></a>00046 ierr=iAlloc(most+1,info,&r->head); <span class="keywordflow">if</span>(ierr) <span class="keywordflow">return</span> 1;
<a name="l00047"></a>00047 ierr=iAlloc(last,info,&r->port); <span class="keywordflow">if</span>(ierr) <span class="keywordflow">return</span> 1;
<a name="l00048"></a>00048 ierr=iAlloc(last,info,&r->fwrd); <span class="keywordflow">if</span>(ierr) <span class="keywordflow">return</span> 1;
<a name="l00049"></a>00049 ierr=iAlloc(last,info,&r->bwrd); <span class="keywordflow">if</span>(ierr) <span class="keywordflow">return</span> 1;
<a name="l00050"></a>00050
<a name="l00051"></a>00051 XtClear(r);
<a name="l00052"></a>00052
<a name="l00053"></a>00053 *rr=r;
<a name="l00054"></a>00054 <span class="keywordflow">return</span> (0);
<a name="l00055"></a>00055 } <span class="comment">/* XtAlloc */</span>
<a name="l00056"></a>00056
<a name="l00057"></a>00057 <span class="keywordtype">void</span> XtFree(xlist **xt)
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059 xlist *r=*xt;
<a name="l00060"></a>00060
<a name="l00061"></a>00061 <span class="keywordflow">if</span> (r) {
<a name="l00062"></a>00062 <span class="keywordflow">if</span> (r->loca) {
<a name="l00063"></a>00063 iFree(&r->head);
<a name="l00064"></a>00064 iFree(&r->port);
<a name="l00065"></a>00065 iFree(&r->fwrd);
<a name="l00066"></a>00066 iFree(&r->bwrd);
<a name="l00067"></a>00067 }
<a name="l00068"></a>00068 free(r);
<a name="l00069"></a>00069 *xt=NULL;
<a name="l00070"></a>00070 }
<a name="l00071"></a>00071 } <span class="comment">/* XtFree */</span>
<a name="l00072"></a>00072
<a name="l00073"></a>00073 <span class="keywordtype">int</span> XtSucc(xlist *xt)
<a name="l00074"></a>00074 {
<a name="l00075"></a>00075 <span class="keywordtype">int</span> t,last=xt->last,most=xt->most,
<a name="l00076"></a>00076 *head;
<a name="l00077"></a>00077
<a name="l00078"></a>00078 <span class="keywordflow">if</span> (xt->cure==last)
<a name="l00079"></a>00079 <span class="keywordflow">return</span> (FALSE);
<a name="l00080"></a>00080
<a name="l00081"></a>00081 <span class="keywordflow">if</span> (xt->fwrd[xt->cure]!=last)
<a name="l00082"></a>00082 xt->cure=xt->fwrd[xt->cure];
<a name="l00083"></a>00083
<a name="l00084"></a>00084 <span class="keywordflow">else</span> {
<a name="l00085"></a>00085 head=xt->head;
<a name="l00086"></a>00086
<a name="l00087"></a>00087 <span class="keywordflow">for</span>(t=xt->port[xt->cure]+1; t<=most && head[t]==last; ++t);
<a name="l00088"></a>00088
<a name="l00089"></a>00089 <span class="keywordflow">if</span> (t>most)
<a name="l00090"></a>00090 xt->cure=last;
<a name="l00091"></a>00091 <span class="keywordflow">else</span>
<a name="l00092"></a>00092 xt->cure=xt->head[t];
<a name="l00093"></a>00093 }
<a name="l00094"></a>00094
<a name="l00095"></a>00095 <span class="keywordflow">return</span> (TRUE);
<a name="l00096"></a>00096 } <span class="comment">/* XtSucc */</span>
<a name="l00097"></a>00097
<a name="l00098"></a>00098 <span class="keywordtype">void</span> XtDel(xlist *xt,
<a name="l00099"></a>00099 <span class="keywordtype">int</span> e)
<a name="l00100"></a>00100 {
<a name="l00101"></a>00101 <span class="keywordtype">int</span> p;
<a name="l00102"></a>00102
<a name="l00103"></a>00103 <span class="keywordflow">if</span> (!ChkXlist(xt,e)) {
<a name="l00104"></a>00104
<a name="l00105"></a>00105 <span class="keywordflow">if</span> (xt->ntot<=0)
<a name="l00106"></a>00106 ExitProc(SysError,NULL);
<a name="l00107"></a>00107
<a name="l00108"></a>00108 xt->ntot--;
<a name="l00109"></a>00109
<a name="l00110"></a>00110 <span class="keywordflow">if</span> (xt->cure==e) {
<a name="l00111"></a>00111 <span class="keywordflow">if</span> (xt->ntot)
<a name="l00112"></a>00112 XtSucc(xt);
<a name="l00113"></a>00113 <span class="keywordflow">else</span>
<a name="l00114"></a>00114 xt->cure=xt->last;
<a name="l00115"></a>00115 }
<a name="l00116"></a>00116
<a name="l00117"></a>00117 p =xt->port[e];
<a name="l00118"></a>00118 xt->port[e]=xt->idep;
<a name="l00119"></a>00119
<a name="l00120"></a>00120 <span class="keywordflow">if</span> (xt->bwrd[e]!=xt->last)
<a name="l00121"></a>00121 xt->fwrd[xt->bwrd[e]]=xt->fwrd[e];
<a name="l00122"></a>00122 <span class="keywordflow">else</span>
<a name="l00123"></a>00123 xt->head[p]=xt->fwrd[e];
<a name="l00124"></a>00124
<a name="l00125"></a>00125 <span class="keywordflow">if</span> (xt->fwrd[e]!=xt->last)
<a name="l00126"></a>00126 xt->bwrd[xt->fwrd[e]]=xt->bwrd[e];
<a name="l00127"></a>00127
<a name="l00128"></a>00128 <span class="keywordflow">if</span> (xt->head[p]==xt->last &&
<a name="l00129"></a>00129 xt->lowp==p) {
<a name="l00130"></a>00130 xt->lowp=xt->idep;
<a name="l00131"></a>00131 <span class="keywordflow">if</span> (xt->ntot) {
<a name="l00132"></a>00132 <span class="keywordflow">for</span>(++p; p<=xt->most; ++p){
<a name="l00133"></a>00133 <span class="keywordflow">if</span> (xt->head[p]!=xt->last){
<a name="l00134"></a>00134 xt->lowp=p;
<a name="l00135"></a>00135 <span class="keywordflow">break</span>;
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137 }
<a name="l00138"></a>00138 }
<a name="l00139"></a>00139 }
<a name="l00140"></a>00140 }
<a name="l00141"></a>00141 } <span class="comment">/* XtDel */</span>
<a name="l00142"></a>00142
<a name="l00143"></a>00143 <span class="keywordtype">void</span> XtPut(xlist *xt,
<a name="l00144"></a>00144 <span class="keywordtype">int</span> e,
<a name="l00145"></a>00145 <span class="keywordtype">int</span> p)
<a name="l00146"></a>00146 {
<a name="l00147"></a>00147 <span class="keywordflow">if</span> (0<=e && e<xt->last && 0<=p && p<=xt->most) {
<a name="l00148"></a>00148 XtDel(xt,e);
<a name="l00149"></a>00149 xt->ntot++;
<a name="l00150"></a>00150 xt->port[e] =p;
<a name="l00151"></a>00151 xt->fwrd[e] =xt->head[p];
<a name="l00152"></a>00152 xt->bwrd[e]=xt->last;
<a name="l00153"></a>00153
<a name="l00154"></a>00154 <span class="keywordflow">if</span> (xt->head[p]!=xt->last)
<a name="l00155"></a>00155 xt->bwrd[xt->head[p]]=e;
<a name="l00156"></a>00156
<a name="l00157"></a>00157 xt->head[p]=e;
<a name="l00158"></a>00158 xt->lowp =min(p,xt->lowp);
<a name="l00159"></a>00159 }
<a name="l00160"></a>00160
<a name="l00161"></a>00161 <span class="keywordflow">else</span>
<a name="l00162"></a>00162 ExitProc(SysError,NULL);
<a name="l00163"></a>00163 } <span class="comment">/* XtPut */</span>
<a name="l00164"></a>00164
<a name="l00165"></a>00165 <span class="keywordtype">int</span> XtLeast(xlist *xt)
<a name="l00166"></a>00166 {
<a name="l00167"></a>00167 <span class="keywordflow">if</span> (xt->lowp==xt->idep) {
<a name="l00168"></a>00168 <span class="keywordflow">if</span> (xt->ntot!=0)
<a name="l00169"></a>00169 ExitProc(SysError,NULL);
<a name="l00170"></a>00170
<a name="l00171"></a>00171 xt->cure=xt->last;
<a name="l00172"></a>00172 <span class="keywordflow">return</span> FALSE;
<a name="l00173"></a>00173 }
<a name="l00174"></a>00174
<a name="l00175"></a>00175 <span class="keywordflow">else</span> {
<a name="l00176"></a>00176 <span class="keywordflow">if</span> (xt->ntot<=0)
<a name="l00177"></a>00177 ExitProc(SysError,NULL);
<a name="l00178"></a>00178
<a name="l00179"></a>00179 xt->cure=xt->head[xt->lowp];
<a name="l00180"></a>00180 <span class="keywordflow">return</span> TRUE;
<a name="l00181"></a>00181 }
<a name="l00182"></a>00182 } <span class="comment">/* XtLeast */</span>
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="keywordtype">int</span> XtGet(xlist *xt,
<a name="l00185"></a>00185 <span class="keywordtype">int</span> *e,
<a name="l00186"></a>00186 <span class="keywordtype">int</span> *p)
<a name="l00187"></a>00187 {
<a name="l00188"></a>00188 <span class="keywordflow">if</span> (xt->cure>xt->last)
<a name="l00189"></a>00189 ExitProc(SysError,NULL);
<a name="l00190"></a>00190
<a name="l00191"></a>00191 <span class="keywordflow">if</span> (xt->cure==xt->last)
<a name="l00192"></a>00192 <span class="keywordflow">return</span> FALSE;
<a name="l00193"></a>00193
<a name="l00194"></a>00194 *e=xt->cure;
<a name="l00195"></a>00195 *p=xt->port[*e];
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="keywordflow">return</span> TRUE;
<a name="l00198"></a>00198 } <span class="comment">/* XtGet */</span>
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