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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: Parameterised 'Image Attributes
Date: Wed, 23 Aug 2023 18:16:10 +0200
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On 2023-08-23 12:20, Stephen Davies wrote:

> Actually, I think it might also be nice if Float'Trim_Image(X) returned
> a string that only used exponential notation for very large or very
> small values (which seems to be the default behaviour in Python).

To use the shortest representation for the given precision unless 
specified otherwise:

    http://www.dmitry-kazakov.de/ada/strings_edit.htm#6

Ada 'Image attributes have "typographic quality" in plain contradiction 
to the claim being for debugging purpose. That is why the plus sign is 
always represented by a space and why floating-point representation is 
always selected even for exact zero and the way the exponent part is 
formatted. The typographic idea is to have *same looking* output. Note, 
even if the output is mathematically incorrect as in the case of 
floating-point numbers. 'Image considers precision and accuracy same, 
which is *always* wrong when dealing with floating-point numbers.

> Different names would then be needed (Tidy_Image and Tidy_Width?).

It takes several parameters to control the behavior in a reasonable way.

-- 
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de