bigfloats?

[Aidan Kehoe]

 Ar an cúigiú lá de mí Feabhra, scríobh Stephen J. Turnbull: 

 > Aidan Kehoe writes:
 >  >  Ar an ceathrú lá de mí Feabhra, scríobh Giacomo Boffi: 
 > 
 >  >  > my question: how can i use bigfloats in my computations? i have to say
 >  >  > that the xemacs user manual was slightly unhelpful...
 > 
 > I think you need to set `default-float-precision' non-zero, or do an
 > explicit `coerce' as in Aidan's post.  Once you figure out how to do
 > what you want to do, a patch to the manual would be nice. :-)

That won’t work for Giacomo’s first example, #'exp doesn’t know about
bigfloats.

 >  > It seems buggy to me, and it certainly doesn’t have the nice
 >  > convert-to-bignum-on-overflow behaviour that integer computations have. 
 > 
 > Due to the nature of bigfloats (unlike bignums, which do not take
 > parameters, bigfloats are parametrized by the precision), it's not
 > clear to me what "nice behavior on overflow" might be for bigfloats.
 >
 > If you'd like to try to specify what you think should happen, feel
 > free.  Maybe Jerry will kick in some advice on how to achieve it, or
 > even some code.

Now I look, Common Lisp has nothing like the bigfloat type; there’s probably
no well-specified behaviour for this out there. Though the Lisp printer
should behave better!

-- 
¿Dónde estará ahora mi sobrino Yoghurtu Nghe, que tuvo que huir
precipitadamente de la aldea por culpa de la escasez de rinocerontes?