97b7211bb7
* src/ltlvisit/Makefile.am: Add consterm.cc and consterm.hh. * src/ltlvisit/consterm.hh, src/ltlvisit/consterm.cc: New files. * src/ltltest/Makefile.am: Add consterm.cc and consterm.test. * src/ltltest/consterm.cc, src/ltltest/consterm.test: New files.
54 lines
1.8 KiB
C++
54 lines
1.8 KiB
C++
// Copyright (C) 2010 Laboratoire de Recherche et Développement de
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// l'EPITA (LRDE).
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//
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// This file is part of Spot, a model checking library.
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//
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// Spot is free software; you can redistribute it and/or modify it
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// under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// Spot is distributed in the hope that it will be useful, but WITHOUT
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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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// or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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// License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Spot; see the file COPYING. If not, write to the Free
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// Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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// 02111-1307, USA.
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#ifndef SPOT_LTLVISIT_CONSTERM_HH
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# define SPOT_LTLVISIT_CONSTERM_HH
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#include "ltlast/formula.hh"
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namespace spot
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{
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namespace ltl
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{
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/// \brief Compute the constant term of a formula.
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/// \ingroup ltl_misc
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///
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/// The constant term of a formula is the empty word if the empty
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/// word is a model of the formula, it is false otherwise.
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///
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/// \see constant_term_as_bool
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formula* constant_term(const formula* f);
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/// \brief Compute the constant term of a formula.
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/// \ingroup ltl_misc
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///
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/// The constant term of a formula is the empty word if the empty
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/// word is a model of the formula, it is false otherwise.
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///
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/// This variant of the function return true instead of
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/// constant::empty_word_instance() and false instead of
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/// constant::false_instance().
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///
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/// \see constant_term
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bool constant_term_as_bool(const formula* f);
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}
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}
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#endif // SPOT_LTLVISIT_LENGTH_HH
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