hash_exponential_size_policy_imp.hpp
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// -*- C++ -*-
// Copyright (C) 2005-2014 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
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/**
* @file hash_exponential_size_policy_imp.hpp
* Contains a resize size policy implementation.
*/
PB_DS_CLASS_T_DEC
PB_DS_CLASS_C_DEC::
hash_exponential_size_policy(size_type start_size, size_type grow_factor) :
m_start_size(start_size),
m_grow_factor(grow_factor)
{ }
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
swap(PB_DS_CLASS_C_DEC& other)
{
std::swap(m_start_size, other.m_start_size);
std::swap(m_grow_factor, other.m_grow_factor);
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::size_type
PB_DS_CLASS_C_DEC::
get_nearest_larger_size(size_type size) const
{
size_type ret = m_start_size;
while (ret <= size)
{
const size_type next_ret = ret* m_grow_factor;
if (next_ret < ret)
__throw_insert_error();
ret = next_ret;
}
return ret;
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::size_type
PB_DS_CLASS_C_DEC::
get_nearest_smaller_size(size_type size) const
{
size_type ret = m_start_size;
while (true)
{
const size_type next_ret = ret* m_grow_factor;
if (next_ret < ret)
__throw_resize_error();
if (next_ret >= size)
return (ret);
ret = next_ret;
}
return ret;
}
std::size
constexpr size_t size() const noexcept
Returns the total number of bits.
Definition: bitset:1293
std::swap
void swap(function< _Res(_Args...)> &__x, function< _Res(_Args...)> &__y)
Swap the targets of two polymorphic function object wrappers.
Definition: functional:2534