ROUNDDOWN disagreements

Hi,

ROUNDDOWN has

| TODO: There are lots of disagreements about the rounding functions and
| what they should do, esp. for negative numbers. Implementors should not
| implement any particular answer until this resolved.

And the disagreements are exactly what? May I assume they are related to
how ROUNDDOWN/ROUNDUP round toward zero / away from zero? If yes, what's
wrong with that? It should not be confused with FLOOR/CEILING.

  Eike

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