[Libmesh-users] TOLERANCE in TypeVector::operator==()

[Roy S. <roy...@ic...>]

What library code do we have that relies on a fuzzy TOLERANCE in
operator== and operator!= in TypeVector and TypeTensor?  I've got some
singular benchmarks where the error bottoms out very quickly using the
default TOLERANCE setting in those functions, but I don't want to make
those equality tests exact (or even drop them down to
TOLERANCE*TOLERANCE) without knowing what I might break by doing so.

I assume there are a few real cases like identifying common hanging
nodes where you have to be prepared for a little FPU error in the
geometry arithmetic, but if possible I'd like to hunt those down and
replace the operator== tests with a call to an explicitly named "fuzzy
equality" method.
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Roy Stogner