Adding upstream version 16.2.11+ds.upstream/16.2.11+dsupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 87 insertions, 0 deletions

diff --git a/src/boost/libs/graph/example/push-relabel-eg.cpp b/src/boost/libs/graph/example/push-relabel-eg.cpp
new file mode 100644
index 000000000..04a6fa485
--- /dev/null
+++ b/src/boost/libs/graph/example/push-relabel-eg.cpp
@@ -0,0 +1,87 @@
+//=======================================================================
+// Copyright 2001 Jeremy G. Siek, Andrew Lumsdaine, Lie-Quan Lee,
+//
+// Distributed under the Boost Software License, Version 1.0. (See
+// accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+//=======================================================================
+#ifdef _MSC_VER
+#define _CRT_SECURE_NO_WARNINGS
+#endif
+#include <boost/config.hpp>
+#include <iostream>
+#include <string>
+#include <boost/graph/push_relabel_max_flow.hpp>
+#include <boost/graph/adjacency_list.hpp>
+#include <boost/graph/read_dimacs.hpp>
+
+// Use a DIMACS network flow file as stdin.
+// push-relabel-eg < max_flow.dat
+//
+// Sample output:
+//  c  The total flow:
+//  s 13
+//
+//  c flow values:
+//  f 0 6 3
+//  f 0 1 0
+//  f 0 2 10
+//  f 1 5 1
+//  f 1 0 0
+//  f 1 3 0
+//  f 2 4 4
+//  f 2 3 6
+//  f 2 0 0
+//  f 3 7 5
+//  f 3 2 0
+//  f 3 1 1
+//  f 4 5 4
+//  f 4 6 0
+//  f 5 4 0
+//  f 5 7 5
+//  f 6 7 3
+//  f 6 4 0
+//  f 7 6 0
+//  f 7 5 0
+
+int main()
+{
+    using namespace boost;
+    typedef adjacency_list_traits< vecS, vecS, directedS > Traits;
+    typedef adjacency_list< vecS, vecS, directedS,
+        property< vertex_name_t, std::string >,
+        property< edge_capacity_t, long,
+            property< edge_residual_capacity_t, long,
+                property< edge_reverse_t, Traits::edge_descriptor > > > >
+        Graph;
+    Graph g;
+
+    property_map< Graph, edge_capacity_t >::type capacity
+        = get(edge_capacity, g);
+    property_map< Graph, edge_residual_capacity_t >::type residual_capacity
+        = get(edge_residual_capacity, g);
+    property_map< Graph, edge_reverse_t >::type rev = get(edge_reverse, g);
+    Traits::vertex_descriptor s, t;
+    read_dimacs_max_flow(g, capacity, rev, s, t);
+
+#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
+    property_map< Graph, vertex_index_t >::type indexmap = get(vertex_index, g);
+    long flow = push_relabel_max_flow(
+        g, s, t, capacity, residual_capacity, rev, indexmap);
+#else
+    long flow = push_relabel_max_flow(g, s, t);
+#endif
+
+    std::cout << "c  The total flow:" << std::endl;
+    std::cout << "s " << flow << std::endl << std::endl;
+    std::cout << "c flow values:" << std::endl;
+    graph_traits< Graph >::vertex_iterator u_iter, u_end;
+    graph_traits< Graph >::out_edge_iterator ei, e_end;
+    for (boost::tie(u_iter, u_end) = vertices(g); u_iter != u_end; ++u_iter)
+        for (boost::tie(ei, e_end) = out_edges(*u_iter, g); ei != e_end; ++ei)
+            if (capacity[*ei] > 0)
+                std::cout << "f " << *u_iter << " " << target(*ei, g) << " "
+                          << (capacity[*ei] - residual_capacity[*ei])
+                          << std::endl;
+    return EXIT_SUCCESS;
+}