OPM/opm-core — pull request #685 by atgeirr (2014-11-20 12:39:45+00:00)
Title: Add free function vertexNeighbours() and test.

The function is needed for work related to ordered upwind methods for flow diagnostics. I decided to put it in opm/core/grid instead of making it anonymous since it may be useful to others.

The function is expected to be somewhat slow in its current incarnation, although algorithmic complexity should be ok, O(n log n).