diff options
Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/mask_based_range_hashing.hpp')
-rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/mask_based_range_hashing.hpp | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/mask_based_range_hashing.hpp b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/mask_based_range_hashing.hpp deleted file mode 100644 index 936abbee1..000000000 --- a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/mask_based_range_hashing.hpp +++ /dev/null @@ -1,107 +0,0 @@ -// -*- 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 mask_based_range_hashing.hpp - * Contains a range hashing policy base. - */ - -#ifndef PB_DS_MASK_BASED_RANGE_HASHING_HPP -#define PB_DS_MASK_BASED_RANGE_HASHING_HPP - -namespace __gnu_pbds -{ - namespace detail - { -#define PB_DS_CLASS_T_DEC template<typename Size_Type> -#define PB_DS_CLASS_C_DEC mask_based_range_hashing<Size_Type> - - template<typename Size_Type> - class mask_based_range_hashing - { - protected: - typedef Size_Type size_type; - - void - swap(mask_based_range_hashing& other) - { std::swap(m_mask, other.m_mask); } - - void - notify_resized(size_type size); - - inline size_type - range_hash(size_type hash) const - { return size_type(hash & m_mask); } - - private: - size_type m_mask; - const static size_type s_num_bits_in_size_type; - const static size_type s_highest_bit_1; - }; - - PB_DS_CLASS_T_DEC - const typename PB_DS_CLASS_C_DEC::size_type - PB_DS_CLASS_C_DEC::s_num_bits_in_size_type = - sizeof(typename PB_DS_CLASS_C_DEC::size_type) << 3; - - PB_DS_CLASS_T_DEC - const typename PB_DS_CLASS_C_DEC::size_type PB_DS_CLASS_C_DEC::s_highest_bit_1 = static_cast<typename PB_DS_CLASS_C_DEC::size_type>(1) << (s_num_bits_in_size_type - 1); - - - PB_DS_CLASS_T_DEC - void - PB_DS_CLASS_C_DEC:: - notify_resized(size_type size) - { - size_type i = 0; - while (size ^ s_highest_bit_1) - { - size <<= 1; - ++i; - } - - m_mask = 1; - i += 2; - while (i++ < s_num_bits_in_size_type) - m_mask = (m_mask << 1) ^ 1; - } - -#undef PB_DS_CLASS_T_DEC -#undef PB_DS_CLASS_C_DEC - - } // namespace detail -} // namespace __gnu_pbds - -#endif |