// -*- C++ -*-
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// Copyright (C) 2005-2017 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the terms
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// of the GNU General Public License as published by the Free Software
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// Foundation; either version 3, or (at your option) any later
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// version.
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// This library is distributed in the hope that it will be useful, but
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// WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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// Permission to use, copy, modify, sell, and distribute this software
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// is hereby granted without fee, provided that the above copyright
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// notice appears in all copies, and that both that copyright notice
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// and this permission notice appear in supporting documentation. None
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// of the above authors, nor IBM Haifa Research Laboratories, make any
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// representation about the suitability of this software for any
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// purpose. It is provided "as is" without express or implied
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// warranty.
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/**
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* @file sample_range_hashing.hpp
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* Contains a range hashing policy.
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*/
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#ifndef PB_DS_SAMPLE_RANGE_HASHING_HPP
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#define PB_DS_SAMPLE_RANGE_HASHING_HPP
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namespace __gnu_pbds
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{
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/// A sample range-hashing functor.
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class sample_range_hashing
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{
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public:
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/// Size type.
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typedef std::size_t size_type;
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/// Default constructor.
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sample_range_hashing();
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/// Copy constructor.
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sample_range_hashing(const sample_range_hashing& other);
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/// Swaps content.
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inline void
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swap(sample_range_hashing& other);
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protected:
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/// Notifies the policy object that the container's size has
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/// changed to argument's size.
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void
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notify_resized(size_type);
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/// Transforms the __hash value hash into a ranged-hash value.
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inline size_type
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operator()(size_type ) const;
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};
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}
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#endif // #ifndef PB_DS_SAMPLE_RANGE_HASHING_HPP
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