diff options
Diffstat (limited to 'gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp')
-rw-r--r-- | gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp b/gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp new file mode 100644 index 0000000..ba8f0e2 --- /dev/null +++ b/gcc-4.9/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp @@ -0,0 +1,70 @@ +// -*- 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 +// 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 binomial_heap_base_/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_ASSERT_VALID_COND((*this),false) + _GLIBCXX_DEBUG_ASSERT(!base_type::empty()); + + if (m_p_max == 0) + const_cast<PB_DS_CLASS_C_DEC* >(this)->find_max(); + + _GLIBCXX_DEBUG_ASSERT(m_p_max != 0); + 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 != 0) + { + 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; + } +} + |