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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
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Nikolaj Bjorner 2018-05-23 08:49:49 -07:00
parent 75eba45926
commit 2800049dd4
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70
src/util/lp/nra_solver.h
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/*
Copyright (c) 2017 Microsoft Corporation
Author: Nikolaj Bjorner
*/
#pragma once
#include "util/vector.h"
#include "util/lp/lp_settings.h"
#include "util/rlimit.h"
#include "util/params.h"
#include "nlsat/nlsat_solver.h"
namespace lp {
class lar_solver;
}
namespace nra {
class solver {
struct imp;
imp* m_imp;
public:
solver(lp::lar_solver& s, reslimit& lim, params_ref const& p = params_ref());
~solver();
/*
\brief Add a definition v = vs[0]*vs[1]*...*vs[sz-1]
The variable v is equal to the product of variables vs.
*/
void add_monomial(lp::var_index v, unsigned sz, lp::var_index const* vs);
/*
\brief Check feasiblity of linear constraints augmented by polynomial definitions
that are added.
*/
lbool check(lp::explanation_t& ex);
/*
\brief determine whether nra check is needed.
*/
bool need_check();
/*
\brief Access model.
*/
nlsat::anum const& value(lp::var_index v) const;
nlsat::anum_manager& am();
/*
\brief push and pop scope.
Monomial definitions are retraced when popping scope.
*/
void push();
void pop(unsigned n);
/*
\brief display state
*/
std::ostream& display(std::ostream& out) const;
};
}