Directed rounding

[Martin von Gagern]

Hello!

Would you consider providing intrinsic functions for directed rounding,
to encapsulate the corresponding features of IEE 754 floating point
computations (resp. the fesetround function of C99)? That would be
useful for mathematical applications, in particular when implementing
interval arithmetic for exact predicates.

I wrote about this before, on June 20, but probably that post was way
too verbose, since I didn't receive any reaction at all. So I'll keep
the initial post short this time.

Thanks for any comment,
 Martin von Gagern

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