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diff --git a/libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/rotate_fn_imps.hpp b/libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/rotate_fn_imps.hpp
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--- /dev/null
+++ b/libstdc++-v3/include/ext/pb_ds/detail/bin_search_tree_/rotate_fn_imps.hpp
@@ -0,0 +1,156 @@
+// -*- 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 rotate_fn_imps.hpp
+ * Contains imps for rotating nodes.
+ */
+
+PB_DS_CLASS_T_DEC
+inline void
+PB_DS_CLASS_C_DEC::
+rotate_left(node_pointer p_x)
+{
+  node_pointer p_y = p_x->m_p_right;
+
+  p_x->m_p_right = p_y->m_p_left;
+
+  if (p_y->m_p_left != NULL)
+    p_y->m_p_left->m_p_parent = p_x;
+
+  p_y->m_p_parent = p_x->m_p_parent;
+
+  if (p_x == m_p_head->m_p_parent)
+    m_p_head->m_p_parent = p_y;
+  else if (p_x == p_x->m_p_parent->m_p_left)
+    p_x->m_p_parent->m_p_left = p_y;
+  else
+    p_x->m_p_parent->m_p_right = p_y;
+
+  p_y->m_p_left = p_x;
+  p_x->m_p_parent = p_y;
+
+  _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_x);)
+    _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_y);)
+
+    apply_update(p_x, (node_update* )this);
+  apply_update(p_x->m_p_parent, (node_update* )this);
+}
+
+PB_DS_CLASS_T_DEC
+inline void
+PB_DS_CLASS_C_DEC::
+rotate_right(node_pointer p_x)
+{
+  node_pointer p_y = p_x->m_p_left;
+
+  p_x->m_p_left = p_y->m_p_right;
+
+  if (p_y->m_p_right != NULL)
+    p_y->m_p_right->m_p_parent = p_x;
+
+  p_y->m_p_parent = p_x->m_p_parent;
+
+  if (p_x == m_p_head->m_p_parent)
+    m_p_head->m_p_parent = p_y;
+  else if (p_x == p_x->m_p_parent->m_p_right)
+    p_x->m_p_parent->m_p_right = p_y;
+  else
+    p_x->m_p_parent->m_p_left = p_y;
+
+  p_y->m_p_right = p_x;
+  p_x->m_p_parent = p_y;
+
+  _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_x);)
+    _GLIBCXX_DEBUG_ONLY(assert_node_consistent(p_y);)
+
+    apply_update(p_x, (node_update* )this);
+  apply_update(p_x->m_p_parent, (node_update* )this);
+}
+
+PB_DS_CLASS_T_DEC
+inline void
+PB_DS_CLASS_C_DEC::
+rotate_parent(node_pointer p_nd)
+{
+  node_pointer p_parent = p_nd->m_p_parent;
+
+  if (p_nd == p_parent->m_p_left)
+    rotate_right(p_parent);
+  else
+    rotate_left(p_parent);
+
+  _GLIBCXX_DEBUG_ASSERT(p_parent->m_p_parent = p_nd);
+  _GLIBCXX_DEBUG_ASSERT(p_nd->m_p_left == p_parent ||
+		   p_nd->m_p_right == p_parent);
+}
+
+PB_DS_CLASS_T_DEC
+inline void
+PB_DS_CLASS_C_DEC::
+apply_update(node_pointer /*p_nd*/, null_node_update_pointer /*p_update*/)
+{ }
+
+PB_DS_CLASS_T_DEC
+template<typename Node_Update_>
+inline void
+PB_DS_CLASS_C_DEC::
+apply_update(node_pointer p_nd, Node_Update_*  /*p_update*/)
+{
+  node_update::operator()(
+			   node_iterator(p_nd),
+			   const_node_iterator(static_cast<node_pointer>(NULL)));
+}
+
+PB_DS_CLASS_T_DEC
+template<typename Node_Update_>
+inline void
+PB_DS_CLASS_C_DEC::
+update_to_top(node_pointer p_nd, Node_Update_* p_update)
+{
+  while (p_nd != m_p_head)
+    {
+      apply_update(p_nd, p_update);
+
+      p_nd = p_nd->m_p_parent;
+    }
+}
+
+PB_DS_CLASS_T_DEC
+inline void
+PB_DS_CLASS_C_DEC::
+update_to_top(node_pointer /*p_nd*/, null_node_update_pointer /*p_update*/)
+{ }
+