2ef8917ba5
* configure.ac: Check for -fvisibility support. * m4/ax_check_compile_flag.m4: New file. * src/misc/common.hh: New file. * src/misc/Makefile.am: Add common.hh, and adjust to use -fvisibility. * src/misc/bareword.hh, src/misc/escape.hh, src/misc/formater.hh, src/misc/intvcmp2.hh, src/misc/intvcomp.hh, src/misc/memusage.hh, src/misc/minato.hh, src/misc/optionmap.hh, src/misc/random.hh, src/misc/timer.hh, src/misc/version.hh, src/misc/bddop.hh: Include common.hh and add SPOT_API tags. * src/misc/acccompl.hh, src/misc/accconv.hh: Prepare for upcoming move. * src/sanity/style.test: Ignore SPOT_API tags. * wrap/python/Makefile.am: Ignore SPOT_API. * wrap/python/spot.i: Do not emit binding for bddalloc.hh. * wrap/python/tests/minato.py: Do not use bdd_allocator.
96 lines
3.4 KiB
C++
96 lines
3.4 KiB
C++
// -*- coding: utf-8 -*-
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// Copyright (C) 2009, 2013 Laboratoire de Recherche et Développement
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// de l'Epita (LRDE).
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// Copyright (C) 2003, 2004 Laboratoire d'Informatique de Paris 6 (LIP6),
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// département Systèmes Répartis Coopératifs (SRC), Université Pierre
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// et Marie Curie.
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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 3 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 this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef SPOT_MISC_MINATO_HH
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# define SPOT_MISC_MINATO_HH
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# include "common.hh"
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# include <bdd.h>
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# include <stack>
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namespace spot
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{
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/// \ingroup misc_tools
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/// \brief Generate an irredundant sum-of-products (ISOP) form of a
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/// BDD function.
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///
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/// This algorithm implements a derecursived version the Minato-Morreale
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/// algorithm presented in the following paper.
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/** \verbatim
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@InProceedings{ minato.92.sasimi,
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author = {Shin-ichi Minato},
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title = {Fast Generation of Irredundant Sum-of-Products Forms
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from Binary Decision Diagrams},
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booktitle = {Proceedings of the third Synthesis and Simulation
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and Meeting International Interchange workshop
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(SASIMI'92)},
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pages = {64--73},
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year = {1992},
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address = {Kobe, Japan},
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month = {April}
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}
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\endverbatim */
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class SPOT_API minato_isop
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{
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public:
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/// \brief Conctructor.
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/// \arg input The BDD function to translate in ISOP.
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minato_isop(bdd input);
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/// \brief Conctructor.
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/// \arg input The BDD function to translate in ISOP.
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/// \arg vars The set of BDD variables to factorize in \a input.
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minato_isop(bdd input, bdd vars);
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/// \brief Compute the next sum term of the ISOP form.
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/// Return \c bddfalse when all terms have been output.
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bdd next();
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private:
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/// Internal variables for minato_isop.
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struct local_vars
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{
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// If you are following the paper, f_min and f_max correspond
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// to the pair of BDD functions used to encode the ternary function f
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// (see Section 3.4).
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// Also note that f0, f0', and f0'' all share the same _max function.
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// Likewise for f1, f1', and f1''.
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bdd f_min, f_max;
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// Because we need a non-recursive version of the algorithm,
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// we had to split it in four steps (each step is separated
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// from the other by a call to ISOP in the original algorithm).
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enum { FirstStep, SecondStep, ThirdStep, FourthStep } step;
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// The list of variables to factorize. This is an addition to
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// the original algorithm.
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bdd vars;
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bdd v1;
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bdd f0_min, f0_max;
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bdd f1_min, f1_max;
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bdd g0, g1;
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local_vars(bdd f_min, bdd f_max, bdd vars)
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: f_min(f_min), f_max(f_max), step(FirstStep), vars(vars) {}
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};
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std::stack<local_vars> todo_;
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std::stack<bdd> cube_;
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bdd ret_;
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};
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}
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#endif // SPOT_MISC_MINATO_HH
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