healpy/healpy — pull request #39 by rainwoodman (2012-06-19 00:23:54+00:00)
Title: try / catch hb's PlanckError-s.

In no case shall a python program die for an exception from external
extension.

There is no way to emit an exception in ufunc, thus we set the calculated
numbers to invalid values:
for (long) [pixel index, usually], -1 is set
for (double) [vector, angle], NAN is set.