--- /dev/null
+// -*- 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;
+}
+
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