mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-08-24 03:57:51 +00:00
Code Activity

umul 2

Browse source
This commit is contained in:
Jakob Rath 2022-07-21 12:38:00 +02:00
parent d4592f2abf
commit 48c6bea331
8 changed files with 48 additions and 50 deletions
Download patch file Download diff file Expand all files Collapse all files

55
src/math/polysat/mul_ovfl_constraint.h
View file

@ -1,55 +0,0 @@
/*++
Copyright (c) 2021 Microsoft Corporation
Module Name:
polysat multiplication overflow constraint
Author:
Jakob Rath, Nikolaj Bjorner (nbjorner) 2021-12-09
--*/
#pragma once
#include "math/polysat/constraint.h"
namespace polysat {
class solver;
class mul_ovfl_constraint final : public constraint {
friend class constraint_manager;
pdd m_p;
pdd m_q;
mul_ovfl_constraint(constraint_manager& m, pdd const& p, pdd const& q);
void simplify();
bool is_always_false(bool is_positive, pdd const& p, pdd const& q) const;
bool is_always_true(bool is_positive, pdd const& p, pdd const& q) const;
bool narrow_bound(solver& s, bool is_positive, pdd const& p0, pdd const& q0, pdd const& p, pdd const& q);
bool try_viable(solver& s, bool is_positive, pdd const& p0, pdd const& q0, pdd const& p, pdd const& q);
lbool eval(pdd const& p, pdd const& q) const;
public:
~mul_ovfl_constraint() override {}
pdd const& p() const { return m_p; }
pdd const& q() const { return m_q; }
std::ostream& display(std::ostream& out, lbool status) const override;
std::ostream& display(std::ostream& out) const override;
bool is_always_false(bool is_positive) const override;
void narrow(solver& s, bool is_positive, bool first) override;
bool is_currently_false(solver & s, bool is_positive) const override;
bool is_currently_true(solver& s, bool is_positive) const override;
bool is_currently_false(solver& s, assignment_t const& sub, bool is_positive) const override { return false; }
bool is_currently_true(solver& s, assignment_t const& sub, bool is_positive) const override { return false; }
inequality as_inequality(bool is_positive) const override { throw default_exception("is not an inequality"); }
unsigned hash() const override;
bool operator==(constraint const& other) const override;
bool is_eq() const override { return false; }
void add_to_univariate_solver(solver& s, univariate_solver& us, unsigned dep, bool is_positive) const override;
};
}