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From: "Jeffrey R. Carter" <ggsub@pragmada.x10hosting.com>
Newsgroups: comp.lang.ada
Subject: Re: Hexadecimal and stream element arrays
Date: Tue, 20 Apr 2010 15:21:22 -0700 (PDT)
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On Apr 20, 12:25=A0am, Stephen Leake <stephen_le...@stephe-leake.org>
wrote:
>
> generic
> =A0 =A0Width : Natural;
> =A0 =A0type Number_Type is mod <>;
> function SAL.Generic_Hex_Image (Item : in Number_Type) return String;
> -- =A0Return a hexadecimal image of Item, padded with leading zeros to
> -- =A0Width. If Width is too small for Item, leading digits are silently
> -- =A0truncated.

So if I sometimes want different widths for the same type, I have to
have multiple instantiations? That doesn't seem very friendly to me. I
don't see why Width couldn't be a parameter of the function, probably
defaulted to Number_Type'Width.

What do I do for signed integer images, for bases other than 16, and
for signed integer images for bases other than 16? Do I have to roll
my own for these cases?

In Ada.Text_IO, a Width of zero implies the minimum width needed to
represent the value; here it's an expensive way to get a null String.
I'd prefer consistency with the standard.

I haven't used SAL, but these are the kind of comments you'd probably
get from me if I did use this function. HTH.