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  1. // -*- C++ -*-
  2.  
  3. // Copyright (C) 2005-2015 Free Software Foundation, Inc.
  4. //
  5. // This file is part of the GNU ISO C++ Library.  This library is free
  6. // software; you can redistribute it and/or modify it under the terms
  7. // of the GNU General Public License as published by the Free Software
  8. // Foundation; either version 3, or (at your option) any later
  9. // version.
  10.  
  11. // This library is distributed in the hope that it will be useful, but
  12. // WITHOUT ANY WARRANTY; without even the implied warranty of
  13. // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14. // General Public License for more details.
  15.  
  16. // Under Section 7 of GPL version 3, you are granted additional
  17. // permissions described in the GCC Runtime Library Exception, version
  18. // 3.1, as published by the Free Software Foundation.
  19.  
  20. // You should have received a copy of the GNU General Public License and
  21. // a copy of the GCC Runtime Library Exception along with this program;
  22. // see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
  23. // <http://www.gnu.org/licenses/>.
  24.  
  25. // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  26.  
  27. // Permission to use, copy, modify, sell, and distribute this software
  28. // is hereby granted without fee, provided that the above copyright
  29. // notice appears in all copies, and that both that copyright notice
  30. // and this permission notice appear in supporting documentation. None
  31. // of the above authors, nor IBM Haifa Research Laboratories, make any
  32. // representation about the suitability of this software for any
  33. // purpose. It is provided "as is" without express or implied
  34. // warranty.
  35.  
  36. /**
  37.  * @file sample_ranged_hash_fn.hpp
  38.  * Contains a ranged hash policy.
  39.  */
  40.  
  41. #ifndef PB_DS_SAMPLE_RANGED_HASH_FN_HPP
  42. #define PB_DS_SAMPLE_RANGED_HASH_FN_HPP
  43.  
  44. namespace __gnu_pbds
  45. {
  46.   /// A sample ranged-hash functor.
  47.   class sample_ranged_hash_fn
  48.   {
  49.   public:
  50.     typedef std::size_t size_type;
  51.  
  52.     /// Default constructor.
  53.     sample_ranged_hash_fn();
  54.  
  55.     /// Copy constructor.
  56.     sample_ranged_hash_fn(const sample_ranged_hash_fn&);
  57.  
  58.     /// Swaps content.
  59.     inline void
  60.     swap(sample_ranged_hash_fn&);
  61.  
  62.   protected:
  63.  
  64.     /// Notifies the policy object that the container's __size has
  65.     /// changed to size.
  66.     void
  67.     notify_resized(size_type);
  68.  
  69.     /// Transforms key_const_reference into a position within the table.
  70.     inline size_type
  71.     operator()(key_const_reference) const;
  72.  
  73.   };
  74. }
  75. #endif // #ifndef PB_DS_SAMPLE_RANGED_HASH_FN_HPP
  76.