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// -*- C++ -*-

// Copyright (C) 2005, 2006, 2009 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

// A sample range-hashing functor.

class sample_range_hashing

{

public:

  // Size type.

  typedef size_t size_type;

public:

  // 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 size.

  void

  notify_resized(size_type size);

  // Transforms the __hash value hash into a ranged-hash value.

  inline size_type

  operator()(size_type hash) const;

};

#endif // #ifndef PB_DS_SAMPLE_RANGE_HASHING_HPP