diff options
Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp new file mode 100644 index 000000000..9b70accd9 --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp @@ -0,0 +1,262 @@ +// -*- 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 rc.hpp + * Contains a redundant (binary counter). + */ + +#ifndef PB_DS_RC_HPP +#define PB_DS_RC_HPP + +namespace __gnu_pbds +{ + namespace detail + { + +#define PB_DS_CLASS_T_DEC \ + template<typename Node, class Allocator> + +#define PB_DS_CLASS_C_DEC \ + rc<Node, Allocator> + + template<typename Node, class Allocator> + class rc + { + private: + typedef Allocator allocator_type; + + typedef typename allocator_type::size_type size_type; + + typedef Node node; + + typedef + typename allocator_type::template rebind< + node>::other::pointer + node_pointer; + + typedef + typename allocator_type::template rebind< + node_pointer>::other::pointer + entry_pointer; + + typedef + typename allocator_type::template rebind< + node_pointer>::other::const_pointer + const_entry_pointer; + + enum + { + max_entries = sizeof(size_type) << 3 + }; + + public: + typedef node_pointer entry; + + typedef const_entry_pointer const_iterator; + + public: + rc(); + + rc(const PB_DS_CLASS_C_DEC& other); + + inline void + swap(PB_DS_CLASS_C_DEC& other); + + inline void + push(entry p_nd); + + inline node_pointer + top() const; + + inline void + pop(); + + inline bool + empty() const; + + inline size_type + size() const; + + void + clear(); + + const const_iterator + begin() const; + + const const_iterator + end() const; + +#ifdef _GLIBCXX_DEBUG + void + assert_valid() const; +#endif + +#ifdef PB_DS_RC_BINOMIAL_HEAP_TRACE_ + void + trace() const; +#endif + + private: + node_pointer m_a_entries[max_entries]; + + size_type m_over_top; + }; + + PB_DS_CLASS_T_DEC + PB_DS_CLASS_C_DEC:: + rc() : m_over_top(0) + { _GLIBCXX_DEBUG_ONLY(assert_valid();) } + + PB_DS_CLASS_T_DEC + PB_DS_CLASS_C_DEC:: + rc(const PB_DS_CLASS_C_DEC& other) : m_over_top(0) + { _GLIBCXX_DEBUG_ONLY(assert_valid();) } + + PB_DS_CLASS_T_DEC + inline void + PB_DS_CLASS_C_DEC:: + swap(PB_DS_CLASS_C_DEC& other) + { + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) + + const size_type over_top = std::max(m_over_top, other.m_over_top); + + for (size_type i = 0; i < over_top; ++i) + std::swap(m_a_entries[i], other.m_a_entries[i]); + + std::swap(m_over_top, other.m_over_top); + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ONLY(other.assert_valid();) + } + + PB_DS_CLASS_T_DEC + inline void + PB_DS_CLASS_C_DEC:: + push(entry p_nd) + { + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ASSERT(m_over_top < max_entries); + m_a_entries[m_over_top++] = p_nd; + _GLIBCXX_DEBUG_ONLY(assert_valid();) + } + + PB_DS_CLASS_T_DEC + inline void + PB_DS_CLASS_C_DEC:: + pop() + { + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ASSERT(!empty()); + --m_over_top; + _GLIBCXX_DEBUG_ONLY(assert_valid();) + } + + PB_DS_CLASS_T_DEC + inline typename PB_DS_CLASS_C_DEC::node_pointer + PB_DS_CLASS_C_DEC:: + top() const + { + _GLIBCXX_DEBUG_ONLY(assert_valid();) + _GLIBCXX_DEBUG_ASSERT(!empty()); + return *(m_a_entries + m_over_top - 1); + } + + PB_DS_CLASS_T_DEC + inline bool + PB_DS_CLASS_C_DEC:: + empty() const + { + _GLIBCXX_DEBUG_ONLY(assert_valid();) + return m_over_top == 0; + } + + PB_DS_CLASS_T_DEC + inline typename PB_DS_CLASS_C_DEC::size_type + PB_DS_CLASS_C_DEC:: + size() const + { return m_over_top; } + + PB_DS_CLASS_T_DEC + void + PB_DS_CLASS_C_DEC:: + clear() + { + _GLIBCXX_DEBUG_ONLY(assert_valid();) + m_over_top = 0; + _GLIBCXX_DEBUG_ONLY(assert_valid();) + } + + PB_DS_CLASS_T_DEC + const typename PB_DS_CLASS_C_DEC::const_iterator + PB_DS_CLASS_C_DEC:: + begin() const + { return& m_a_entries[0]; } + + PB_DS_CLASS_T_DEC + const typename PB_DS_CLASS_C_DEC::const_iterator + PB_DS_CLASS_C_DEC:: + end() const + { return& m_a_entries[m_over_top]; } + +#ifdef _GLIBCXX_DEBUG + PB_DS_CLASS_T_DEC + void + PB_DS_CLASS_C_DEC:: + assert_valid() const + { _GLIBCXX_DEBUG_ASSERT(m_over_top < max_entries); } +#endif + +#ifdef PB_DS_RC_BINOMIAL_HEAP_TRACE_ + PB_DS_CLASS_T_DEC + void + PB_DS_CLASS_C_DEC:: + trace() const + { + std::cout << "rc" << std::endl; + for (size_type i = 0; i < m_over_top; ++i) + std::cerr << m_a_entries[i] << std::endl; + std::cout << std::endl; + } +#endif + +#undef PB_DS_CLASS_T_DEC +#undef PB_DS_CLASS_C_DEC + +} // namespace detail +} // namespace __gnu_pbds + +#endif |