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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Any good package for mathematical function in Ada?
Date: Fri, 5 Jun 2020 17:49:45 -0500
Organization: JSA Research & Innovation
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:rb2p52$qvl$1@gioia.aioe.org...
...
> As for GMP specifically, I think that arbitrary precision numeric types 
> must be an integral part of Ada. Unfortunately, this would introduce same 
> mess Unbounded_String did. So, for now, I would not push for them until 
> the language type system mature to accommodate them smoothly.

You're a little late for that. See Big_Integer:

http://www.ada-auth.org/standards/2xrm/html/RM-A-5-6.html

and Big_Real:

http://www.ada-auth.org/standards/2xrm/html/RM-A-5-7.html

Since Ada 202x has user-defined literals and user-defined Image, this is 
almost as good as a built-in number. The only downside would be using them 
in generics (like GEF), but most of those implementations assume a maximum 
precision that's not true for these so they'd need rewriting anyway.

                           Randy.