diff options
Diffstat (limited to 'libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp')
| -rw-r--r-- | libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp b/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp new file mode 100644 index 00000000000..7b26b352a08 --- /dev/null +++ b/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp @@ -0,0 +1,79 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006 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 2, 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. + +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING. If not, write to +// the Free Software Foundation, 59 Temple Place - Suite 330, Boston, +// MA 02111-1307, USA. + +// As a special exception, you may use this file as part of a free +// software library without restriction. Specifically, if other files +// instantiate templates or use macros or inline functions from this +// file, or you compile this file and link it with other files to +// produce an executable, this file does not by itself cause the +// resulting executable to be covered by the GNU General Public +// License. This exception does not however invalidate any other +// reasons why the executable file might be covered by the GNU General +// Public License. + +// 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 find_fn_imps.hpp + * Contains an implementation class for a base of binomial heaps. + */ + +PB_DS_CLASS_T_DEC +inline typename PB_DS_CLASS_C_DEC::const_reference +PB_DS_CLASS_C_DEC:: +top() const +{ + PB_DS_DBG_ONLY(assert_valid(false);) + PB_DS_DBG_ASSERT(!base_type::empty()); + + if (m_p_max == NULL) + const_cast<PB_DS_CLASS_C_DEC* >(this)->find_max(); + + PB_DS_DBG_ASSERT(m_p_max != NULL); + return m_p_max->m_value; +} + +PB_DS_CLASS_T_DEC +void +PB_DS_CLASS_C_DEC:: +find_max() +{ + node_pointer p_cur = base_type::m_p_root; + + m_p_max = p_cur; + + while (p_cur != NULL) + { + if (Cmp_Fn::operator()(m_p_max->m_value, p_cur->m_value)) + m_p_max = p_cur; + + p_cur = p_cur->m_p_next_sibling; + } +} + |