Double -> CDouble, realToFrac doesn't work

[Sven Panne]

ross at soi.city.ac.uk wrote:
> [...] True, though Hugs is already inconsistent with H98 in its printing of
> floating point values.

This is not quite right: Numeric.showFloat would be OK (modulo "arithmetic
overflow" :-), but Hugs currently uses C's snprintf, resulting in "inf"/"nan",
not "Infinity"/"NaN" on my SuSE 9.1 box.

Cheers,
    S.