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/****************************************************************************** |
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* Top contributors (to current version): |
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* Gereon Kremer |
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* |
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* This file is part of the cvc5 project. |
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* |
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* Copyright (c) 2009-2021 by the authors listed in the file AUTHORS |
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* in the top-level source directory and their institutional affiliations. |
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* All rights reserved. See the file COPYING in the top-level source |
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* directory for licensing information. |
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* **************************************************************************** |
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* |
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* Implements a container for CAD constraints. |
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*/ |
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#include "theory/arith/nl/cad/constraints.h" |
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#ifdef CVC5_POLY_IMP |
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#include <algorithm> |
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#include "theory/arith/nl/poly_conversion.h" |
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#include "util/poly_util.h" |
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namespace cvc5 { |
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namespace theory { |
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namespace arith { |
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namespace nl { |
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namespace cad { |
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void Constraints::addConstraint(const poly::Polynomial& lhs, |
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poly::SignCondition sc, |
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Node n) |
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{ |
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d_constraints.emplace_back(lhs, sc, n); |
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sortConstraints(); |
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} |
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void Constraints::addConstraint(Node n) |
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{ |
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auto c = as_poly_constraint(n, d_varMapper); |
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addConstraint(c.first, c.second, n); |
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sortConstraints(); |
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} |
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const Constraints::ConstraintVector& Constraints::getConstraints() const |
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{ |
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return d_constraints; |
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} |
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void Constraints::reset() { d_constraints.clear(); } |
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void Constraints::sortConstraints() |
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{ |
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using Tpl = std::tuple<poly::Polynomial, poly::SignCondition, Node>; |
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std::sort(d_constraints.begin(), |
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d_constraints.end(), |
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[](const Tpl& at, const Tpl& bt) { |
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// Check if a is smaller than b |
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const poly::Polynomial& a = std::get<0>(at); |
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const poly::Polynomial& b = std::get<0>(bt); |
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bool ua = is_univariate(a); |
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bool ub = is_univariate(b); |
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if (ua != ub) return ua; |
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std::size_t tda = poly_utils::totalDegree(a); |
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std::size_t tdb = poly_utils::totalDegree(b); |
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if (tda != tdb) return tda < tdb; |
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return degree(a) < degree(b); |
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}); |
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for (auto& c : d_constraints) |
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{ |
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auto* p = std::get<0>(c).get_internal(); |
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lp_polynomial_set_external(p); |
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} |
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} |
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} // namespace cad |
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} // namespace nl |
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} // namespace arith |
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} // namespace theory |
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} // namespace cvc5 |
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#endif |