Find out why core::float needs explicit exports

[boggle]

core::float imports from fXY::* which in turn re-exports predicates and functions from cmath.

Turns out the predicates somehow do not get exported unless one uses explicit export statements.

This is a bug and it needs to be investigated where this is coming from.

[marijnh]

This is by design, if I remember correctly.

[boggle]

I thought the rule was: "if you dont have any export statement, all gets exported". If there is anything special about predicates, this should go into the spec.

[marijnh]

If you don't export anything, everything that is locally defined gets exported, not things that were imported from elsewhere. But maybe that's not what you're referring to here. The code that manages re-exports is young, and might have bugs. Though predicates are just functions, and I don't see a reason why they wouldn't work.

[boggle]

Ah ok, i did not realize that imported items are not considered part of the set of local definitions.