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From: "Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de>
Newsgroups: comp.lang.ada
Subject: Re: getting same output as gfortran, long_float
Date: Fri, 1 May 2015 09:01:49 +0200
Organization: cbb software GmbH
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Date: 2015-05-01T09:01:49+02:00
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On Thu, 30 Apr 2015 20:12:47 -0500, Nasser M. Abbasi wrote:

> So, I wonder what it would take to integrate this
> library to gnat to allow one to do
> 
>      type My_Float is digits 34;

That would require compiler maintainers.

> and just have it work as is. I assume this requires
> support and some changes at the compiler level
> (system.max_digits has to change for example)? Now it
> is set at 18 and the above gives compiler error.

AFAIK GCC has integrated support for __float128, so if you could live with 

   type IEEE_Float_128 is private;

you would need no changes in the compiler. Arithmetic operations would be
implemented through calls to <quadmath.h> or whatever GCC uses.

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