Changeset 1381:998e8def9676 in lemon-0.x for src/demo/lp_maxflow_demo.cc

Timestamp:

04/22/05 19:47:01 (19 years ago)

Author:

Alpar Juttner

Branch:

default

Phase:

public

Convert:

svn:c9d7d8f5-90d6-0310-b91f-818b3a526b0e/lemon/trunk@1834

Message:

• lp_cplex.h, lp_cplex.cc added
• lp_demo.cc and lp_maxflow_demo.cc uses GLPK is it is found CPLEX otherwise

File:

• src/demo/lp_maxflow_demo.cc (modified) (5 diffs)

src/demo/lp_maxflow_demo.cc

@@ -1 @@
-#include<lemon/lp_glpk.h>
 #include<lemon/graph_reader.h>
 #include<lemon/list_graph.h>
 
+
+#ifdef HAVE_GLPK
+#include <lemon/lp_glpk.h>
+#elif HAVE_CPLEX
+#include <lemon/lp_cplex.h>
+#endif
+
 using namespace lemon;
+
+#ifdef HAVE_GLPK
+typedef LpGlpk LpDefault;
+#elif HAVE_CPLEX
+typedef LpCplex LpDefault;
+#endif
+
 
 template<class G,class C>
 double maxFlow(const G &g,const C &cap,typename G::Node s,typename G::Node t)
 {
-  LpGlpk lp;
+  LpDefault lp;
   
   typedef G Graph;
@@ -18 +31 @@
   typedef typename G::InEdgeIt InEdgeIt;
   
-  typename G::template EdgeMap<LpGlpk::Col> x(g);
+  typename G::template EdgeMap<LpDefault::Col> x(g);
   lp.addColSet(x);
   
@@ -27 +40 @@
 
   for(NodeIt n(g);n!=INVALID;++n) if(n!=s&&n!=t) {
-    LpGlpk::Expr ex;
+    LpDefault::Expr ex;
     for(InEdgeIt  e(g,n);e!=INVALID;++e) ex+=x[e];
     for(OutEdgeIt e(g,n);e!=INVALID;++e) ex-=x[e];
@@ -33 +46 @@
   }
   {
-    LpGlpk::Expr ex;
+    LpDefault::Expr ex;
     for(InEdgeIt  e(g,t);e!=INVALID;++e) ex+=x[e];
     for(OutEdgeIt e(g,t);e!=INVALID;++e) ex-=x[e];
@@ -40 +53 @@
   lp.max();
 
+#ifdef HAVE_GLPK
   lp.presolver(true);
-  
   lp.messageLevel(3);
+#endif
 
   lp.solve();