Floating_Point_Expression_defs.hh

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/* Declarations for the Floating_Point_Expression class and its constituents.
   Copyright (C) 2001-2010 Roberto Bagnara <bagnara@cs.unipr.it>
   Copyright (C) 2010-2016 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://bugseng.com/products/ppl/ . */

#ifndef PPL_Floating_Point_Expression_defs_hh
#define PPL_Floating_Point_Expression_defs_hh 1

#include "Floating_Point_Expression_types.hh"
#include "globals_defs.hh"
#include "Linear_Form_types.hh"
#include "Box_types.hh"
#include <cmath>
#include <map>

namespace Parma_Polyhedra_Library {

template <typename FP_Interval_Type, typename FP_Format>
class Floating_Point_Expression {

public:

  typedef Linear_Form<FP_Interval_Type> FP_Linear_Form;


  typedef Box<FP_Interval_Type> FP_Interval_Abstract_Store;


  typedef std::map<dimension_type, FP_Linear_Form>
          FP_Linear_Form_Abstract_Store;

  typedef typename FP_Interval_Type::boundary_type boundary_type;

  typedef typename FP_Interval_Type::info_type info_type;

  virtual ~Floating_Point_Expression();


  virtual bool linearize(const FP_Interval_Abstract_Store& int_store,
                         const FP_Linear_Form_Abstract_Store& lf_store,
                         FP_Linear_Form& result) const = 0;

  static FP_Interval_Type absolute_error;

  // FIXME: this may not be the best place for them.
  static bool overflows(const FP_Linear_Form& lf);

  static void relative_error(const FP_Linear_Form& lf,
                             FP_Linear_Form& result);

  static void intervalize(const FP_Linear_Form& lf,
                          const FP_Interval_Abstract_Store& store,
                          FP_Interval_Type& result);

private:

  static FP_Interval_Type compute_absolute_error();

}; // class Floating_Point_Expression


template <typename FP_Interval_Type, typename FP_Format>
FP_Interval_Type Floating_Point_Expression<FP_Interval_Type, FP_Format>
  ::absolute_error = compute_absolute_error();

} // namespace Parma_Polyhedra_Library

#include "Floating_Point_Expression_inlines.hh"
#include "Floating_Point_Expression_templates.hh"

#endif // !defined(PPL_Floating_Point_Expression_defs_hh)