Comparing edges

How can two edges be compared whether they are equal.
Using TopTools_IndexedDataMapOfShapeListOfShape failed in some cases

for example:
When a plane has a circular hole, its geometry is GeomAbs_Circle.
A free form surface is made inside this circular hole, its geometry becomes GeomAbs_BSplineCurve.

In this case the two edges are stored as different entries in the map.
How can I check their equality.

Thanks in advance,
Rakesh