Aubrey Jaffer <xxxxxx@alum.mit.edu> writes:

> What is the rationale for mandating exact rationals?

This (from the SRFI document):

> Under R5RS, it is hard to write programs whose arithmetic is
> portable across the above categories, and it is unnecessarily
> difficult even to write programs whose arithmetic is portable
> between different implementations in the same category.

> The portability problems can most easily be solved by requiring all
> implementations to support the full numeric tower.

--
Cheers =8-} Mike
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