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diff --git a/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/hash_fn/sample_range_hashing.hpp b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/hash_fn/sample_range_hashing.hpp
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+++ b/i686-linux-gnu-4.7/usr/include/c++/4.7/ext/pb_ds/detail/hash_fn/sample_range_hashing.hpp
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+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009, 2010 Free Software Foundation, Inc.
+//
+// This file is part of the GNU ISO C++ Library.  This library is free
+// software; you can redistribute it and/or modify it under the terms
+// of the GNU General Public License as published by the Free Software
+// Foundation; either version 3, or (at your option) any later
+// version.
+
+// This library is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// General Public License for more details.
+
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
+
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+// <http://www.gnu.org/licenses/>.
+
+// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
+
+// Permission to use, copy, modify, sell, and distribute this software
+// 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. None
+// of the above authors, nor IBM Haifa Research Laboratories, make any
+// representation about the suitability of this software for any
+// purpose. It is provided "as is" without express or implied
+// warranty.
+
+/**
+ * @file sample_range_hashing.hpp
+ * Contains a range hashing policy.
+ */
+
+#ifndef PB_DS_SAMPLE_RANGE_HASHING_HPP
+#define PB_DS_SAMPLE_RANGE_HASHING_HPP
+
+namespace __gnu_pbds
+{
+  /// A sample range-hashing functor.
+  class sample_range_hashing
+  {
+  public:
+    /// Size type.
+    typedef std::size_t size_type;
+
+    /// Default constructor.
+    sample_range_hashing();
+
+    /// Copy constructor.
+    sample_range_hashing(const sample_range_hashing& other);
+
+    /// Swaps content.
+    inline void
+    swap(sample_range_hashing& other);
+
+  protected:
+    /// Notifies the policy object that the container's size has
+    /// changed to argument's size.
+    void
+    notify_resized(size_type);
+
+    /// Transforms the __hash value hash into a ranged-hash value.
+    inline size_type
+    operator()(size_type ) const;
+  };
+}
+#endif // #ifndef PB_DS_SAMPLE_RANGE_HASHING_HPP