Marcin 'Qrczak' Kowalczyk <xxxxxx@knm.org.pl> writes:

> IEEE anticipates the possibility of letting various errors be
> signalled (in a catchable way) instead of producing special answers.
> It would be a challenge to make this accessible from Scheme.

I'm flabbergasted that you say this.  It makes me think you have
almost no experience with Scheme.

Thomas