Re: Radians Or Degrees?

There are groups who have shown that exactly rounded trancendental
functions are in fact achievable with maybe 3X reduced performance.

That much?  I had the impression it was significantly cheaper.

At which cost in tables sizes?

My impression was that it wasn't costly in that respect, but since my
recollection seems to be off on the performance, maybe it's off here
as well.

The critical point here is definition of what considered exact. If
'exact' is measured only on y side of y=foo(x), disregarding
possible imprecision on the x side then you are very likely to end up
with results that are slower to calculate, but not at all more useful
from point of view of engineer or physicist. Exactly like Payne-Hanek
or Mitch's equivalent of Payne-Hanek.

I don't know what are/were the motivations for the people working on
exact transcendentals, but they have applications unrelated to the fact
that they're "better": the main benefit (from this here PL guy) is that
it gives them a reliable, reproducible semantics.
Bit-for-bit reproducibility makes several things much easier.


        Stefan