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add smul over and underflow predicate

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-02-20 11:39:45 +02:00
parent dc3b921712
commit 1faccffd0d
8 changed files with 88 additions and 50 deletions
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13
src/math/polysat/constraint.h
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@ -20,12 +20,12 @@ Author:
namespace polysat {
enum ckind_t { ule_t, mul_ovfl_t, smul_ovfl_t, op_t };
enum ckind_t { ule_t, mul_ovfl_t, smul_fl_t, op_t };
class constraint;
class ule_constraint;
class mul_ovfl_constraint;
class smul_ovfl_constraint;
class smul_fl_constraint;
class op_constraint;
class signed_constraint;
@ -100,6 +100,7 @@ namespace polysat {
signed_constraint slt(pdd const& a, pdd const& b);
signed_constraint mul_ovfl(pdd const& p, pdd const& q);
signed_constraint smul_ovfl(pdd const& p, pdd const& q);
signed_constraint smul_udfl(pdd const& p, pdd const& q);
signed_constraint bit(pdd const& p, unsigned i);
signed_constraint lshr(pdd const& p, pdd const& q, pdd const& r);
signed_constraint band(pdd const& p, pdd const& q, pdd const& r);
@ -141,7 +142,7 @@ namespace polysat {
friend class clause;
friend class ule_constraint;
friend class mul_ovfl_constraint;
friend class smul_ovfl_constraint;
friend class smul_fl_constraint;
friend class op_constraint;
// constraint_manager* m_manager;
@ -170,7 +171,7 @@ namespace polysat {
virtual bool is_diseq() const { return false; }
bool is_ule() const { return m_kind == ckind_t::ule_t; }
bool is_mul_ovfl() const { return m_kind == ckind_t::mul_ovfl_t; }
bool is_smul_ovfl() const { return m_kind == ckind_t::smul_ovfl_t; }
bool is_smul_fl() const { return m_kind == ckind_t::smul_fl_t; }
bool is_op() const { return m_kind == ckind_t::op_t; }
ckind_t kind() const { return m_kind; }
virtual std::ostream& display(std::ostream& out, lbool status) const = 0;
@ -190,8 +191,8 @@ namespace polysat {
ule_constraint const& to_ule() const;
mul_ovfl_constraint& to_mul_ovfl();
mul_ovfl_constraint const& to_mul_ovfl() const;
smul_ovfl_constraint& to_smul_ovfl();
smul_ovfl_constraint const& to_smul_ovfl() const;
smul_fl_constraint& to_smul_fl();
smul_fl_constraint const& to_smul_fl() const;
op_constraint& to_op();
op_constraint const& to_op() const;
unsigned_vector& vars() { return m_vars; }