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diff --git a/src/Init.defs.hh b/src/Init.defs.hh
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+/* Init class declaration.
+   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_Init_defs_hh
+#define PPL_Init_defs_hh 1
+
+#include "Init.types.hh"
+#include "fpu.types.hh"
+
+namespace Parma_Polyhedra_Library {
+
+/*! \brief
+  Sets the FPU rounding mode so that the PPL abstractions based on
+  floating point numbers work correctly.
+
+  This is performed automatically at initialization-time.  Calling
+  this function is needed only if restore_pre_PPL_rounding() has been
+  previously called.
+*/
+void set_rounding_for_PPL();
+
+/*! \brief
+  Sets the FPU rounding mode as it was before initialization of the PPL.
+
+  After calling this function it is absolutely necessary to call
+  set_rounding_for_PPL() before using any PPL abstractions based on
+  floating point numbers.
+  This is performed automatically at finalization-time.
+*/
+void restore_pre_PPL_rounding();
+
+} // namespace Parma_Polyhedra_Library
+
+#ifdef PPL_DOXYGEN_INCLUDE_IMPLEMENTATION_DETAILS
+//! Class for initialization and finalization.
+/*! \ingroup PPL_CXX_interface
+  <EM>Nifty Counter</EM> initialization class,
+  ensuring that the library is initialized only once
+  and before its first use.
+  A count of the number of translation units using the library
+  is maintained. A static object of Init type will be declared
+  by each translation unit using the library.  As a result,
+  only one of them will initialize and properly finalize
+  the library.
+*/
+#endif // defined(PPL_DOXYGEN_INCLUDE_IMPLEMENTATION_DETAILS)
+class Parma_Polyhedra_Library::Init {
+public:
+  //! Initializes the PPL.
+  Init();
+
+  //! Finalizes the PPL.
+  ~Init();
+
+private:
+  //! Count the number of objects created.
+  static unsigned int count;
+  static fpu_rounding_direction_type old_rounding_direction;
+
+  friend void set_rounding_for_PPL();
+  friend void restore_pre_PPL_rounding();
+};
+
+#include "Init.inlines.hh"
+
+
+#endif // !defined(PPL_Init_defs_hh)