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Re: [Gcl-devel] [Maxima] Stable Maxima version on Gentoo

From: Camm Maguire
Subject: Re: [Gcl-devel] [Maxima] Stable Maxima version on Gentoo
Date: Tue, 02 Oct 2012 16:57:23 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/23.2 (gnu/linux)


"Stewart W. Wilson" <address@hidden> writes:

> ----------------------------------------------------------
> I want to use GCL instead of paying for Allegro.
> But GCL often prints numbers with too many places.
> Example
>>(+ 1.234 2.567)
> 3.8010000000000002

Alas, there is no *print-?* flag in the lisp standard to my knowledge.
In fact, there are requirements that an implementation must be able to
re-read exactly the same float as print out under normal circumstances,
hence the gcl behavior.  That said, it would be trivial to implement
some non-standard gcl-specific setting to truncate floats at a given
number of digits.  I'm posting this to the devel list to see if this
might be useful to others too.

Take care,
Camm Maguire                                        address@hidden
"The earth is but one country, and mankind its citizens."  --  Baha'u'llah

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