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smul no overflow

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2022-02-16 18:55:07 +02:00
parent 89d6f1c191
commit 8c9835bca6
24 changed files with 376 additions and 63 deletions
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16
src/math/polysat/constraint.cpp
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@ -19,6 +19,7 @@ Author:
#include "math/polysat/log_helper.h"
#include "math/polysat/ule_constraint.h"
#include "math/polysat/mul_ovfl_constraint.h"
#include "math/polysat/smul_ovfl_constraint.h"
#include "math/polysat/op_constraint.h"
namespace polysat {
@ -237,6 +238,10 @@ namespace polysat {
return { dedup(alloc(mul_ovfl_constraint, *this, a, b)), true };
}
signed_constraint constraint_manager::smul_ovfl(pdd const& a, pdd const& b) {
return { dedup(alloc(smul_ovfl_constraint, *this, a, b)), true };
}
signed_constraint constraint_manager::lshr(pdd const& p, pdd const& q, pdd const& r) {
return { dedup(alloc(op_constraint, *this, op_constraint::code::lshr_op, p, q, r)), true };
}
@ -291,6 +296,14 @@ namespace polysat {
return *dynamic_cast<mul_ovfl_constraint const*>(this);
}
smul_ovfl_constraint& constraint::to_smul_ovfl() {
return *dynamic_cast<smul_ovfl_constraint*>(this);
}
smul_ovfl_constraint const& constraint::to_smul_ovfl() const {
return *dynamic_cast<smul_ovfl_constraint const*>(this);
}
op_constraint& constraint::to_op() {
return *dynamic_cast<op_constraint*>(this);
}
@ -320,7 +333,6 @@ namespace polysat {
if (!s.is_assigned(other_v)) {
s.add_watch({this, is_positive}, other_v);
std::swap(vars()[idx], vars()[i]);
// narrow(s, is_positive);
return true;
}
}
@ -333,7 +345,7 @@ namespace polysat {
void constraint::propagate_core(solver& s, bool is_positive, pvar v, pvar other_v) {
(void)v;
(void)other_v;
narrow(s, is_positive);
narrow(s, is_positive, false);
}