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IMHO this piece of code should be part of the "axioms" in corelib, since without that the "spec" for comparison is pretty useless. I did only expose the proofs for
Eq
, since this is what I need, but internally it proves more, egltb x x = false
and the like.Note that for integers, the axioms already have a decent form I can use directly to reason about the native comparison, while for strings one has to do quite some work...
CC @proux01