forked from KolibriOS/kolibrios
432e5f16f8
git-svn-id: svn://kolibrios.org@6554 a494cfbc-eb01-0410-851d-a64ba20cac60
91 lines
2.7 KiB
C++
91 lines
2.7 KiB
C++
// -*- C++ -*-
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// Copyright (C) 2005-2015 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 hash_exponential_size_policy_imp.hpp
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* Contains a resize size policy implementation.
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*/
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PB_DS_CLASS_T_DEC
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PB_DS_CLASS_C_DEC::
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hash_exponential_size_policy(size_type start_size, size_type grow_factor) :
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m_start_size(start_size),
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m_grow_factor(grow_factor)
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{ }
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PB_DS_CLASS_T_DEC
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void
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PB_DS_CLASS_C_DEC::
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swap(PB_DS_CLASS_C_DEC& other)
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{
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std::swap(m_start_size, other.m_start_size);
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std::swap(m_grow_factor, other.m_grow_factor);
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}
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PB_DS_CLASS_T_DEC
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typename PB_DS_CLASS_C_DEC::size_type
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PB_DS_CLASS_C_DEC::
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get_nearest_larger_size(size_type size) const
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{
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size_type ret = m_start_size;
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while (ret <= size)
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{
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const size_type next_ret = ret* m_grow_factor;
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if (next_ret < ret)
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__throw_insert_error();
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ret = next_ret;
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}
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return ret;
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}
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PB_DS_CLASS_T_DEC
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typename PB_DS_CLASS_C_DEC::size_type
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PB_DS_CLASS_C_DEC::
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get_nearest_smaller_size(size_type size) const
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{
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size_type ret = m_start_size;
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while (true)
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{
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const size_type next_ret = ret* m_grow_factor;
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if (next_ret < ret)
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__throw_resize_error();
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if (next_ret >= size)
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return (ret);
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ret = next_ret;
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}
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return ret;
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}
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