new file

[SVN r10803]

example/tc.dot

@@ -0,0 +1,13 @@
+digraph TC {
+ node[shape=circle];
+  a
+  b
+  c
+  d
+
+  b -> c
+  b -> d
+  c -> b
+  d -> c
+  d -> a
+}

example/transitive_closure.cpp

@@ -0,0 +1,33 @@
+// Copyright (c) Jeremy Siek 2001
+//
+// Permission to use, copy, modify, distribute and sell this software
+// and its documentation for any purpose is hereby granted without fee,
+// provided that the above copyright notice appears in all copies and
+// that both that copyright notice and this permission notice appear
+// in supporting documentation.  Silicon Graphics makes no
+// representations about the suitability of this software for any
+// purpose.  It is provided "as is" without express or implied warranty.
+
+#include <boost/graph/transitive_closure.hpp>
+#include <boost/graph/graphviz.hpp>
+
+int main(int, char*[])
+{
+  using namespace boost;
+  char name[] = "abcd";
+  GraphvizDigraph G;
+  read_graphviz("tc.dot", G);
+
+  std::cout << "Graph G:" << std::endl;
+  print_graph(G, name);
+
+  transitive_closure(G);
+
+  std::cout << std::endl << "Graph G*:" << std::endl;
+  print_graph(G, name);
+  std::cout << std::endl;
+
+  write_graphviz("tc-out.dot", G);
+
+  return 0;
+}