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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
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--- /dev/null
+++ b/libstdc++-v3/include/ext/pb_ds/detail/binomial_heap_base_/find_fn_imps.hpp
@@ -0,0 +1,73 @@
+// -*- 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
+// .
+
+// 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
+{
+ _GLIBCXX_DEBUG_ONLY(assert_valid(false);)
+ _GLIBCXX_DEBUG_ASSERT(!base_type::empty());
+
+ if (m_p_max == NULL)
+ const_cast(this)->find_max();
+
+ _GLIBCXX_DEBUG_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;
+ }
+}
+