/// <summary>
/// Implement the logical "exists" operation,
/// recursively calling the manager if necessary.
/// </summary>
/// <param name="xid">The left index.</param>
/// <param name="x">The left node.</param>
/// <param name="variables">The variable set.</param>
/// <returns>The resulting function.</returns>
public DDIndex Exists(DDIndex xid, BDDNode x, VariableSet <BDDNode> variables)
{
var lo = this.Manager.Exists(x.Low, variables);
var hi = this.Manager.Exists(x.High, variables);
if (variables.Contains(x.Variable))
{
return(this.Manager.Or(lo, hi));
}
return(this.Manager.Allocate(new BDDNode(x.Variable, lo, hi)));
}
/// <summary>
/// Implement the logical "exists" operation,
/// recursively calling the manager if necessary.
/// </summary>
/// <param name="xid">The left index.</param>
/// <param name="x">The left node.</param>
/// <param name="variables">The variable set.</param>
/// <returns>The resulting function.</returns>
public DDIndex Exists(DDIndex xid, CBDDNode x, VariableSet <CBDDNode> variables)
{
throw new System.NotImplementedException();
}
