Setting the input 'max_distance' of 'geodesic_distance' function.

[GostInShell]

I use the geodesic_distance function to compute geometrci distance between source and dest vertices pairs. It is said in the documentation that when max_distance is set, then only yields results for geodesic distances less than :obj:max_distance. However, when testing I find that settign max_distance=0 and max_distance=None output exact the same results, while the former is much faster. Is this usual? Is the faster result less accurate?

[rusty1s]

Note that we are using gdist for geodesic distance computation, so it might be best to ask for implementation specific questions here. In case both functions yield the expected result, I would simply go with the faster one :)