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diff --git a/src/Partial_Function.inlines.hh b/src/Partial_Function.inlines.hh
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+/* Partial_Function class implementation: 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_Partial_Function_inlines_hh
+#define PPL_Partial_Function_inlines_hh 1
+
+#include <stdexcept>
+#include <cassert>
+
+namespace Parma_Polyhedra_Library {
+
+inline
+Partial_Function::Partial_Function()
+  : max(0) {
+}
+
+inline bool
+Partial_Function::has_empty_codomain() const {
+  PPL_ASSERT(vec.empty() == codomain.empty());
+  return vec.empty();
+}
+
+inline dimension_type
+Partial_Function::max_in_codomain() const {
+  if (has_empty_codomain())
+    throw std::runtime_error("Partial_Function::max_in_codomain() called"
+			     " when has_empty_codomain()");
+  PPL_ASSERT(codomain.begin() != codomain.end()
+             && max == *codomain.rbegin());
+  return max;
+}
+
+inline void
+Partial_Function::insert(dimension_type i, dimension_type j) {
+#ifndef NDEBUG
+  // The partial function has to be an injective map.
+  std::pair<std::set<dimension_type>::iterator, bool> s = codomain.insert(j);
+  PPL_ASSERT(s.second);
+#endif // #ifndef NDEBUG
+
+  // Expand `vec' if needed.
+  const dimension_type sz = vec.size();
+  if (i >= sz)
+    vec.insert(vec.end(), i - sz + 1, not_a_dimension());
+
+  // We cannot remap the same index to another one.
+  PPL_ASSERT(i < vec.size() && vec[i] == not_a_dimension());
+  vec[i] = j;
+
+  // Maybe update `max'.
+  if (j > max)
+    max = j;
+  PPL_ASSERT(codomain.begin() != codomain.end()
+             && max == *codomain.rbegin());
+}
+
+inline bool
+Partial_Function::maps(dimension_type i, dimension_type& j) const {
+  if (i >= vec.size())
+    return false;
+  dimension_type vec_i = vec[i];
+  if (vec_i == not_a_dimension())
+    return false;
+  j = vec_i;
+  return true;
+}
+
+} // namespace Parma_Polyhedra_Library
+
+#endif // !defined(PPL_Partial_Function_inlines_hh)