mozilla/rust — pull request #14733 by sfackler (2014-06-07 20:49:15+00:00)
Title: Fix PartialEq documentation with regards to floats

It is in fact the case that `NaN != NaN`. The true relations for
compareQuietNotEqual are LT, GT *and* UN.

I also rephrased the docs for PartialOrd since floats are not the only
types which are not totally ordered.