Re: [AC21.5] Texinfo manual kilo-patch

"Stephen J. Turnbull" <[email protected]> Fri, 30 Apr 2004 20:31:36 +0900
Newsgroups gmane.emacs.xemacs.patches,gmane.emacs.xemacs.design
Organization The XEmacs Project
Message-ID <[email protected]>
Let's move this to xemacs-design before MS wakes up and whacks us all
with a cricket wicket.  MFT set.

>>>>> "Hrvoje" == Hrvoje Niksic <[email protected]> writes:

    Hrvoje> Non-bignum XEmacs basically does what C does, which sets
    Hrvoje> the expectation quite low.  I was wondering if a bignum
    Hrvoje> XEmacs could do better for floating point operations, like
    Hrvoje> it does better for integers.

Yes, it can, but not automatically and reliably.  Assuming that
mantissas of bigfloats are not represented in a base evenly divisible
by 3, what precision should

    (* 1.0 1/3)

have?  The multiplicand is representable in a teeny-float, the
multiplier not representable by any float under the assumption, so
somebody must choose an explicitly limited precision.


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