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diff --git a/boost/polygon/segment_data.hpp b/boost/polygon/segment_data.hpp
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+// Boost.Polygon library segment_data.hpp header file
+
+// Copyright (c) Intel Corporation 2008.
+// Copyright (c) 2008-2012 Simonson Lucanus.
+// Copyright (c) 2012-2012 Andrii Sydorchuk.
+
+// See http://www.boost.org for updates, documentation, and revision history.
+// Use, modification and distribution is subject to 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_POLYGON_SEGMENT_DATA_HPP
+#define BOOST_POLYGON_SEGMENT_DATA_HPP
+
+#include "isotropy.hpp"
+#include "segment_concept.hpp"
+
+namespace boost {
+namespace polygon {
+
+template <typename T>
+class segment_data {
+ public:
+  typedef T coordinate_type;
+  typedef point_data<T> point_type;
+
+  segment_data()
+#ifndef BOOST_POLYGON_MSVC
+    : points_()
+#endif
+  {}
+
+  segment_data(const point_type& low, const point_type& high) {
+    points_[LOW] = low;
+    points_[HIGH] = high;
+  }
+
+  segment_data(const segment_data& that) {
+    points_[0] = that.points_[0];
+    points_[1] = that.points_[1];
+  }
+
+  segment_data& operator=(const segment_data& that) {
+    points_[0] = that.points_[0];
+    points_[1] = that.points_[1];
+    return *this;
+  }
+
+  template <typename SegmentType>
+  segment_data& operator=(const SegmentType& that) {
+    assign(*this, that);
+    return *this;
+  }
+
+  point_type get(direction_1d dir) const {
+    return points_[dir.to_int()];
+  }
+
+  void set(direction_1d dir, const point_type& point) {
+    points_[dir.to_int()] = point;
+  }
+
+  point_type low() const {
+    return points_[LOW];
+  }
+
+  segment_data& low(const point_type& point) {
+    points_[LOW] = point;
+    return *this;
+  }
+
+  point_type high() const {
+    return points_[HIGH];
+  }
+
+  segment_data& high(const point_type& point) {
+    points_[HIGH] = point;
+    return *this;
+  }
+
+  bool operator==(const segment_data& that) const {
+    return (points_[0] == that.points_[0]) &&
+           (points_[1] == that.points_[1]);
+  }
+
+  bool operator!=(const segment_data& that) const {
+    return (points_[0] != that.points_[0]) ||
+           (points_[1] != that.points_[1]);
+  }
+
+  bool operator<(const segment_data& that) const {
+    if (points_[0] != that.points_[0]) {
+      points_[0] < that.points_[0];
+    }
+    return points_[1] < that.points_[1];
+  }
+
+  bool operator<=(const segment_data& that) const {
+    return !(that < *this);
+  }
+
+  bool operator>(const segment_data& that) const {
+    return that < *this;
+  }
+
+  bool operator>=(const segment_data& that) const {
+    return !((*this) < that);
+  }
+
+ private:
+  point_type points_[2];
+};
+
+template <typename CType>
+struct geometry_concept<segment_data<CType> > {
+  typedef segment_concept type;
+};
+}  // polygon
+}  // boost
+
+#endif  // BOOST_POLYGON_SEGMENT_DATA_HPP