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From: melahi_ahmed@yahoo.fr (ahmed)
Newsgroups: comp.lang.forth
Subject: Re: Avoid treating the stack as an array [Re: "Back & Forth" is back!]
Date: Sun, 15 Sep 2024 12:06:52 +0000
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On Sun, 15 Sep 2024 9:58:23 +0000, mhx wrote:

> This unearthed a "bug": -1e309 does not fit in a dfloat,
> it prints as -Inf.

In practice, the universe of discourse of x is bounded [xmin, xmax].
I use normalized univers of discours [-1, 1].
So to get neg_big I just use a big value (absolute value) for the
parameter a (for example: -1e6)

-1e6 -1e 0e  tri_mf: neg_big
-1e   0e 1e6 tri_mf: pos_big

and this gives: x is between -2e and 2e for example
    neg_big(x) equals approximately 1 for all x less than -1.
    pos_big(x) equals approximately 1 for all x greater than 1.

So I don't use 1e309 or -1e309.

Ahmed