Here's an update based on a recent Smolder report (http://smolder.plusthree.com/app/public_projects/report_details/21469);
veracity.t: passing arithmetics.t: ok 7 - negate -0.0 # TODO -0.0 not implemented, TT #313 : still not passing (Why is this showing up yellow rather than green on the Smolder report if it is 'ok'?) complex.t: not ok 380 # TODO sinh of -2-3i not ok 381 # TODO sinh of -2-3i float.t: not ok 23 - neg 0 # TODO -0.0 not implemented, TT #313 # Failed (TODO) test 'neg 0' # at t/pmc/float.t line 512. # '0' # doesn't match '/^-0/ # ' So I would say that only one of the six tests I originally flagged has been clearly resolved.