/// <summary>
/// Substitution of a list of variablepairs in an Fdd
/// </summary>
/// <param name="t">The BDD to apply compose on</param>
/// <param name="pairList">The list to substitute</param>
/// <returns></returns>
public static Bdd Compose(Bdd t, FddPairList pairList)
{
foreach (KeyValuePair <int, int> pair in pairList)
{
for (int i = 0; i < FddDictionary[pair.Key]; i++)
{
t = Kernel.Compose(t, pair.Key + i, pair.Value + i);
}
}
return(t);
}
/// <summary>
/// Boolean operation and existential quantification on a list of variables.
/// The same operation as first using Apply() and then VarListExists().
/// </summary>
/// <param name="pairList">The list of pairs.</param>
/// <param name="root">The BDD to do the Exists operation on.</param>
/// <returns>The resulting Bdd</returns>
public static Bdd Exists(FddPairList pairList, Bdd root)
{
IEnumerator <KeyValuePair <int, bool> > enumerator = pairList.GetEnumeratorExists();
enumerator.MoveNext();
while (enumerator.Current.Key != 0) //safe because Fdd var always starts on 1.
{
for (int i = 0; i < FddDictionary[enumerator.Current.Key]; i++)
{
root = Kernel.Exists(enumerator.Current.Key + i, root);
}
enumerator.MoveNext();
}
return(root);
}
