public void Example()
{
// f(a,b,c) = (!a & !b & !c) | (a & b) | (b & c)
var obdd = new OBDD();
var a = obdd.MakeNode(0, BDDNode.True, BDDNode.False);
var b = obdd.MakeNode(1, BDDNode.True, BDDNode.False);
var c = obdd.MakeNode(2, BDDNode.True, BDDNode.False);
var na = obdd.MakeNot(a);
var nb = obdd.MakeNot(b);
var nc = obdd.MakeNot(c);
var tmpAnd = obdd.MakeAnd(na, nb);
var and1 = obdd.MakeAnd(tmpAnd, nc);
var and2 = obdd.MakeAnd(a, b);
var and3 = obdd.MakeAnd(b, c);
var tmpOr = obdd.MakeOr(and1, and2);
var or = obdd.MakeOr(tmpOr, and3);
var root = or;
using (var writer = new StringWriter())
{
root.ExportToGraphviz(writer);
Debug.Log(writer);
}
}
public static BDDNode MakeLiteral(this OBDD obdd, int index)
{
return(obdd.MakeNode(index, BDDNode.True, BDDNode.False));
}