mirrors/z3
3
0
Fork 0
mirror of https://github.com/Z3Prover/z3 synced 2025-04-22 08:35:31 +00:00
Code Activity

simplify overflow check up front

Browse source 
Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2024-02-01 09:37:41 -08:00
parent 6a1f173e03
commit 111dee9143
1 changed files with 5 additions and 1 deletions
Download patch file Download diff file Expand all files Collapse all files

6
src/sat/smt/polysat/constraints.cpp
View file

@ -33,7 +33,11 @@ namespace polysat {
return is_positive ? sc : ~sc;
}
signed_constraint constraints::umul_ovfl(pdd const& p, pdd const& q) {
signed_constraint constraints::umul_ovfl(pdd const& p, pdd const& q) {
if (p == q) {
unsigned N = p.manager().power_of_2();
return ule(rational::power_of_two(N - 1), p);
}
auto* cnstr = alloc(umul_ovfl_constraint, p, q);
c.trail().push(new_obj_trail(cnstr));
return signed_constraint(ckind_t::umul_ovfl_t, cnstr);