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add first test for band

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2021-12-18 12:28:59 -08:00
parent 8f8d88bc9d
commit c1d5111159
6 changed files with 81 additions and 27 deletions
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4
src/math/polysat/constraint.cpp
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@ -237,6 +237,10 @@ namespace polysat {
return { dedup(alloc(op_constraint, *this, op_constraint::code::lshr_op, p, q, r)), true };
}
signed_constraint constraint_manager::band(pdd const& p, pdd const& q, pdd const& r) {
return { dedup(alloc(op_constraint, *this, op_constraint::code::and_op, p, q, r)), true };
}
// To do signed comparison of bitvectors, flip the msb and do unsigned comparison:
//
// x <=s y <=> x + 2^(w-1) <=u y + 2^(w-1)