コード例 #1
0
rClause GenPWAgg::checkHeadPropagationForAgg(bool& propagations, const Agg& agg, const minmaxBounds& bound) {
	auto confl = nullPtrClause;
	auto propagatehead = false;
	if (agg.hasLB() && bound.max < agg.getBound()) {
		propagatehead = true;
	} else if (agg.hasUB() && agg.getBound() < bound.min) {
		propagatehead = true;
	}
	if (propagatehead) {
		propagations = true;
		confl = getSet().notifySolver(new HeadReason(agg, agg.getHead()));
		notifyFirstPropagation(agg.getHead());
	}
	return confl;
}
コード例 #2
0
ファイル: FullyWatched.cpp プロジェクト: vonwenm/Minisatid
/**
 * Returns true if this aggregate can be propagated in the initialization, so it will never change truth value
 * and can be left out of any propagations.
 * Returns false if the aggregate is certainly unsat.
 */
lbool FWAgg::initialize(const Agg& agg) {
	auto confl = nullPtrClause;

	auto hv = canPropagateHead(agg, getCC(), getCP());
	bool alwaystrue = false;
	if (hv != l_Undef) {
		alwaystrue = true;
	}
	if (hv == l_True) {
		confl = getSet().notifySolver(new HeadReason(agg, agg.getHead()));
	} else if (hv == l_False) {
		confl = getSet().notifySolver(new HeadReason(agg, not agg.getHead()));
	}
	if (confl != nullPtrClause) {
		return l_False;
	}

	return alwaystrue ? l_True : l_Undef;
}