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diff --git a/src/iterator_to_const.inlines.hh b/src/iterator_to_const.inlines.hh
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+/* iterator_to_const and const_iterator_to_const class implementations:
+   inline functions.
+   Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
+   Copyright (C) 2010-2011 BUGSENG srl (http://bugseng.com)
+
+This file is part of the Parma Polyhedra Library (PPL).
+
+The PPL 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 of the License, or (at your
+option) any later version.
+
+The PPL 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 program; if not, write to the Free Software Foundation,
+Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.
+
+For the most up-to-date information see the Parma Polyhedra Library
+site: http://www.cs.unipr.it/ppl/ . */
+
+#ifndef PPL_iterator_to_const_inlines_hh
+#define PPL_iterator_to_const_inlines_hh 1
+
+namespace Parma_Polyhedra_Library {
+
+template <typename Container>
+inline
+iterator_to_const<Container>::iterator_to_const()
+  : base() {
+}
+
+template <typename Container>
+inline
+iterator_to_const<Container>::iterator_to_const(const iterator_to_const& y)
+  : base(y.base) {
+}
+
+template <typename Container>
+inline
+iterator_to_const<Container>::iterator_to_const(const Base& b)
+  : base(b) {
+}
+
+template <typename Container>
+inline typename iterator_to_const<Container>::reference
+iterator_to_const<Container>::operator*() const {
+  return *base;
+}
+
+template <typename Container>
+inline typename iterator_to_const<Container>::pointer
+iterator_to_const<Container>::operator->() const {
+  return &*base;
+}
+
+template <typename Container>
+inline iterator_to_const<Container>&
+iterator_to_const<Container>::operator++() {
+  ++base;
+  return *this;
+}
+
+template <typename Container>
+inline iterator_to_const<Container>
+iterator_to_const<Container>::operator++(int) {
+  iterator_to_const tmp = *this;
+  operator++();
+  return tmp;
+}
+
+template <typename Container>
+inline iterator_to_const<Container>&
+iterator_to_const<Container>::operator--() {
+  --base;
+  return *this;
+}
+
+template <typename Container>
+inline iterator_to_const<Container>
+iterator_to_const<Container>::operator--(int) {
+  iterator_to_const tmp = *this;
+  operator--();
+  return tmp;
+}
+
+template <typename Container>
+inline bool
+iterator_to_const<Container>::operator==(const iterator_to_const& y) const {
+  return base == y.base;
+}
+
+template <typename Container>
+inline bool
+iterator_to_const<Container>::operator!=(const iterator_to_const& y) const {
+  return !operator==(y);
+}
+
+template <typename Container>
+inline
+const_iterator_to_const<Container>::const_iterator_to_const()
+  : base() {
+}
+
+template <typename Container>
+inline
+const_iterator_to_const<Container>
+::const_iterator_to_const(const const_iterator_to_const& y)
+  : base(y.base) {
+}
+
+template <typename Container>
+inline
+const_iterator_to_const<Container>::const_iterator_to_const(const Base& b)
+  : base(b) {
+}
+
+template <typename Container>
+inline typename const_iterator_to_const<Container>::reference
+const_iterator_to_const<Container>::operator*() const {
+  return *base;
+}
+
+template <typename Container>
+inline typename const_iterator_to_const<Container>::pointer
+const_iterator_to_const<Container>::operator->() const {
+  return &*base;
+}
+
+template <typename Container>
+inline const_iterator_to_const<Container>&
+const_iterator_to_const<Container>::operator++() {
+  ++base;
+  return *this;
+}
+
+template <typename Container>
+inline const_iterator_to_const<Container>
+const_iterator_to_const<Container>::operator++(int) {
+  const_iterator_to_const tmp = *this;
+  operator++();
+  return tmp;
+}
+
+template <typename Container>
+inline const_iterator_to_const<Container>&
+const_iterator_to_const<Container>::operator--() {
+  --base;
+  return *this;
+}
+
+template <typename Container>
+inline const_iterator_to_const<Container>
+const_iterator_to_const<Container>::operator--(int) {
+  const_iterator_to_const tmp = *this;
+  operator--();
+  return tmp;
+}
+
+template <typename Container>
+inline bool
+const_iterator_to_const<Container>
+::operator==(const const_iterator_to_const& y) const {
+  return base == y.base;
+}
+
+template <typename Container>
+inline bool
+const_iterator_to_const<Container>
+::operator!=(const const_iterator_to_const& y) const {
+  return !operator==(y);
+}
+
+template <typename Container>
+inline
+const_iterator_to_const<Container>
+::const_iterator_to_const(const iterator_to_const<Container>& y)
+  : base(y.base) {
+}
+
+/*! \relates const_iterator_to_const */
+template <typename Container>
+inline bool
+operator==(const iterator_to_const<Container>& x,
+	   const const_iterator_to_const<Container>& y) {
+  return const_iterator_to_const<Container>(x).operator==(y);
+}
+
+/*! \relates const_iterator_to_const */
+template <typename Container>
+inline bool
+operator!=(const iterator_to_const<Container>& x,
+	   const const_iterator_to_const<Container>& y) {
+  return !(x == y);
+}
+
+} // namespace Parma_Polyhedra_Library
+
+#endif // !defined(PPL_iterator_to_const_inlines_hh)