1// -*- C++ -*- 2 3// Copyright (C) 2005-2013 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 mod_based_range_hashing.hpp 38 * Contains a range hashing policy base. 39 */ 40 41#ifndef PB_DS_MOD_BASED_RANGE_HASHING_HPP 42#define PB_DS_MOD_BASED_RANGE_HASHING_HPP 43 44namespace __gnu_pbds 45{ 46 namespace detail 47 { 48 /// Mod based range hashing. 49 template<typename Size_Type> 50 class mod_based_range_hashing 51 { 52 protected: 53 typedef Size_Type size_type; 54 55 void 56 swap(mod_based_range_hashing& other) 57 { std::swap(m_size, other.m_size); } 58 59 void 60 notify_resized(size_type s) 61 { m_size = s; } 62 63 inline size_type 64 range_hash(size_type s) const 65 { return s % m_size; } 66 67 private: 68 size_type m_size; 69 }; 70 } // namespace detail 71 72} // namespace __gnu_pbds 73 74#endif // #ifndef PB_DS_MOD_BASED_RANGE_HASHING_HPP 75