Added boost header

test/external/boost/graph/bandwidth.hpp

@@ -0,0 +1,87 @@
+// Copyright (c) Jeremy Siek 2001, Marc Wintermantel 2002
+//
+// 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)
+
+#ifndef BOOST_GRAPH_BANDWIDTH_HPP
+#define BOOST_GRAPH_BANDWIDTH_HPP
+
+#include <algorithm> // for std::min and std::max
+#include <boost/config.hpp>
+#include <boost/graph/graph_traits.hpp>
+#include <boost/detail/numeric_traits.hpp>
+
+namespace boost {
+
+  template <typename Graph, typename VertexIndexMap>
+  typename graph_traits<Graph>::vertices_size_type
+  ith_bandwidth(typename graph_traits<Graph>::vertex_descriptor i,
+                const Graph& g,
+                VertexIndexMap index)
+  {
+    BOOST_USING_STD_MAX();
+    using std::abs;
+    typedef typename graph_traits<Graph>::vertices_size_type vertices_size_type;
+    vertices_size_type b = 0;
+    typename graph_traits<Graph>::out_edge_iterator e, end;
+    for (boost::tie(e, end) = out_edges(i, g); e != end; ++e) {
+      int f_i = get(index, i);
+      int f_j = get(index, target(*e, g));
+      b = max BOOST_PREVENT_MACRO_SUBSTITUTION (b, vertices_size_type(abs(f_i - f_j)));
+    }
+    return b;
+  }
+
+  template <typename Graph>
+  typename graph_traits<Graph>::vertices_size_type
+  ith_bandwidth(typename graph_traits<Graph>::vertex_descriptor i,
+                const Graph& g)
+  {
+    return ith_bandwidth(i, g, get(vertex_index, g));
+  }
+
+  template <typename Graph, typename VertexIndexMap>
+  typename graph_traits<Graph>::vertices_size_type
+  bandwidth(const Graph& g, VertexIndexMap index)
+  {
+    BOOST_USING_STD_MAX();
+    using std::abs;
+    typedef typename graph_traits<Graph>::vertices_size_type vertices_size_type;
+    vertices_size_type b = 0;
+    typename graph_traits<Graph>::edge_iterator i, end;
+    for (boost::tie(i, end) = edges(g); i != end; ++i) {
+      int f_i = get(index, source(*i, g));
+      int f_j = get(index, target(*i, g));
+      b = max BOOST_PREVENT_MACRO_SUBSTITUTION (b, vertices_size_type(abs(f_i - f_j)));
+    }
+    return b;
+  }
+
+  template <typename Graph>
+  typename graph_traits<Graph>::vertices_size_type
+  bandwidth(const Graph& g)
+  {
+    return bandwidth(g, get(vertex_index, g));
+  }
+
+  template <typename Graph, typename VertexIndexMap>
+  typename graph_traits<Graph>::vertices_size_type
+  edgesum(const Graph& g, VertexIndexMap index_map)
+  {
+    typedef typename graph_traits<Graph>::vertices_size_type size_type;
+    typedef typename detail::numeric_traits<size_type>::difference_type diff_t;
+    size_type sum = 0;
+    typename graph_traits<Graph>::edge_iterator i, end;
+    for (boost::tie(i, end) = edges(g); i != end; ++i) {
+      diff_t f_u = get(index_map, source(*i, g));
+      diff_t f_v = get(index_map, target(*i, g));
+      using namespace std; // to call abs() unqualified
+      sum += abs(f_u - f_v);
+    }
+    return sum;
+  }
+  
+} // namespace boost
+
+#endif // BOOST_GRAPH_BANDWIDTH_HPP