diff options
Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/split_join_fn_imps.hpp')
-rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/split_join_fn_imps.hpp | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/split_join_fn_imps.hpp b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/split_join_fn_imps.hpp new file mode 100644 index 000000000..a701937cb --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/split_join_fn_imps.hpp @@ -0,0 +1,232 @@ +// -*- 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 split_join_fn_imps.hpp + * Contains an implementation class for a base of binomial heaps. + */ + +PB_DS_CLASS_T_DEC +template<typename Pred> +void +PB_DS_CLASS_C_DEC:: +split(Pred pred, PB_DS_CLASS_C_DEC& other) +{ + _GLIBCXX_DEBUG_ONLY(assert_valid(true);) + _GLIBCXX_DEBUG_ONLY(other.assert_valid(true);) + + other.clear(); + + if (base_type::empty()) + { + _GLIBCXX_DEBUG_ONLY(assert_valid(true);) + _GLIBCXX_DEBUG_ONLY(other.assert_valid(true);) + + return; + } + + base_type::to_linked_list(); + + node_pointer p_out = base_type::prune(pred); + + while (p_out != NULL) + { + _GLIBCXX_DEBUG_ASSERT(base_type::m_size > 0); + --base_type::m_size; + + ++other.m_size; + + node_pointer p_next = p_out->m_p_next_sibling; + + p_out->m_p_l_child = p_out->m_p_prev_or_parent = NULL; + + p_out->m_metadata = 0; + + p_out->m_p_next_sibling = other.m_p_root; + + if (other.m_p_root != NULL) + other.m_p_root->m_p_prev_or_parent = p_out; + + other.m_p_root = p_out; + + other.m_p_root = other.fix(other.m_p_root); + + p_out = p_next; + } + + _GLIBCXX_DEBUG_ONLY(other.assert_valid(true);) + + node_pointer p_cur = base_type::m_p_root; + + base_type::m_p_root = NULL; + + while (p_cur != NULL) + { + node_pointer p_next = p_cur->m_p_next_sibling; + + p_cur->m_p_l_child = p_cur->m_p_prev_or_parent = NULL; + + p_cur->m_metadata = 0; + + p_cur->m_p_next_sibling = base_type::m_p_root; + + if (base_type::m_p_root != NULL) + base_type::m_p_root->m_p_prev_or_parent = p_cur; + + base_type::m_p_root = p_cur; + + base_type::m_p_root = fix(base_type::m_p_root); + + p_cur = p_next; + } + + m_p_max = NULL; + + _GLIBCXX_DEBUG_ONLY(assert_valid(true);) + _GLIBCXX_DEBUG_ONLY(other.assert_valid(true);) + } + +PB_DS_CLASS_T_DEC +inline void +PB_DS_CLASS_C_DEC:: +join(PB_DS_CLASS_C_DEC& other) +{ + _GLIBCXX_DEBUG_ONLY(assert_valid(true);) + _GLIBCXX_DEBUG_ONLY(other.assert_valid(true);) + + node_pointer p_other = other.m_p_root; + + if (p_other != NULL) + do + { + node_pointer p_next = p_other->m_p_next_sibling; + + std::swap(p_other->m_p_next_sibling, p_other->m_p_prev_or_parent); + + p_other = p_next; + } + while (p_other != NULL); + + base_type::m_p_root = join(base_type::m_p_root, other.m_p_root); + base_type::m_size += other.m_size; + m_p_max = NULL; + + other.m_p_root = NULL; + other.m_size = 0; + other.m_p_max = NULL; + + _GLIBCXX_DEBUG_ONLY(assert_valid(true);) + _GLIBCXX_DEBUG_ONLY(other.assert_valid(true);) + } + +PB_DS_CLASS_T_DEC +inline typename PB_DS_CLASS_C_DEC::node_pointer +PB_DS_CLASS_C_DEC:: +join(node_pointer p_lhs, node_pointer p_rhs) const +{ + node_pointer p_ret = NULL; + + node_pointer p_cur = NULL; + + while (p_lhs != NULL || p_rhs != NULL) + { + if (p_rhs == NULL) + { + if (p_cur == NULL) + p_ret = p_cur = p_lhs; + else + { + p_cur->m_p_next_sibling = p_lhs; + + p_lhs->m_p_prev_or_parent = p_cur; + } + + p_cur = p_lhs = NULL; + } + else if (p_lhs == NULL || p_rhs->m_metadata < p_lhs->m_metadata) + { + if (p_cur == NULL) + { + p_ret = p_cur = p_rhs; + + p_rhs = p_rhs->m_p_prev_or_parent; + } + else + { + p_cur->m_p_next_sibling = p_rhs; + + p_rhs = p_rhs->m_p_prev_or_parent; + + p_cur->m_p_next_sibling->m_p_prev_or_parent = p_cur; + + p_cur = p_cur->m_p_next_sibling; + } + } + else if (p_lhs->m_metadata < p_rhs->m_metadata) + { + if (p_cur == NULL) + p_ret = p_cur = p_lhs; + else + { + p_cur->m_p_next_sibling = p_lhs; + + p_lhs->m_p_prev_or_parent = p_cur; + + p_cur = p_cur->m_p_next_sibling; + } + + p_lhs = p_cur->m_p_next_sibling; + } + else + { + node_pointer p_next_rhs = p_rhs->m_p_prev_or_parent; + + p_rhs->m_p_next_sibling = p_lhs; + + p_lhs = fix(p_rhs); + + p_rhs = p_next_rhs; + } + } + + if (p_cur != NULL) + p_cur->m_p_next_sibling = NULL; + + if (p_ret != NULL) + p_ret->m_p_prev_or_parent = NULL; + + return p_ret; +} + |