protected override INumericalAbstractDomain <BoxedExpression> HelperForJoin(
INumericalAbstractDomain <BoxedExpression> newState, INumericalAbstractDomain <BoxedExpression> prevState, Pair <APC, APC> edge)
{
return((SubPolyhedra <BoxedExpression>)newState.Join(prevState));
}
/// <summary>
/// Must implement the join/widen operation
/// </summary>
/// <param name="edge"></param>
/// <param name="newState"></param>
/// <param name="prevState"></param>
/// <param name="weaker">should return false if result is less than or equal prevState.</param>
/// <param name="widen">true if this is a widen operation. For our INumericalAbstractDomain<Expression>, this makes no difference</param>
public INumericalAbstractDomain <BoxedVariable <Variable>, BoxedExpression> Join(Pair <APC, APC> edge, INumericalAbstractDomain <BoxedVariable <Variable>, BoxedExpression> newState, INumericalAbstractDomain <BoxedVariable <Variable>, BoxedExpression> prevState, out bool weaker, bool widen)
{
INumericalAbstractDomain <BoxedVariable <Variable>, BoxedExpression> result = (INumericalAbstractDomain <BoxedVariable <Variable>, BoxedExpression>)prevState.Join(newState);
weaker = !prevState.LessEqual(newState);
return(result);
}