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Re: [Gcl-devel] gcl vs sbcl vs ccl

From: Raymond Toy
Subject: Re: [Gcl-devel] gcl vs sbcl vs ccl
Date: Mon, 12 Oct 2015 08:21:24 -0700
User-agent: Gnus/5.101 (Gnus v5.10.10) XEmacs/21.5-b34 (linux)

>>>>> "Gunter" == Gunter Königsmann <address@hidden> writes:

    Gunter> The things I have solved by switching to a 64-bit linux so far are:

    Gunter>  - misusing wxMaxima as a replacement of excel that isn't
    Gunter> limited to a million cells or so.

A million cells doesn't seem so big, even for a 32-bit lisp.

    Gunter>  - worst-case-tolerance calculations: I frequently use
    Gunter> maxima to find out which equation describes the system I
    Gunter> am working with. Then I make a list of all circuit element
    Gunter> values including the tolerance band they can lie
    Gunter> within. Then I use a package I have written myself to
    Gunter> iterate all possible combinations of element values and
    Gunter> try to determine the minimum and maximum value I can
    Gunter> possibly get this way. If this involves an "if" it is
    Gunter> 64-bits for sure.

This seems more easily solved by doing interval arithmetic or even
Monte-Carlo simulations.

    Gunter>  - plotting a set of solutions for differential equations
    Gunter> that are barely within the limits desolve finds solutions
    Gunter> in 

Numerical solutions don't work?

    Gunter> One could argue if most of this falls into the categories
    Gunter> "misuse of maxima" and "ugly workaround for
    Gunter> bugs". Determining where an oscillogram comes from and
    Gunter> tolerance calculations most probably don't. But - since
    Gunter> 64-bit get me rid of most of the problems I might
    Gunter> encounter I would still be grateful if they existed.

I wouldn't call them misuse.


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