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From: "Randy Brukardt" <randy@rrsoftware.com>
Newsgroups: comp.lang.ada
Subject: Re: Example Ada calling Gnu Scientific Library (GSL)
Date: Thu, 30 Mar 2017 15:44:07 -0500
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"Dmitry A. Kazakov" <mailbox@dmitry-kazakov.de> wrote in message 
news:obj4b1$dus$1@gioia.aioe.org...
...
> Preconditions may help, do we have formal generic pre-/post-conditions?

Preconditions can be given on any non-instance subprogram, including those 
in (or that are) a generic. For preconditions on a generic formal package, 
you'd probably have to use assertions.

                                     Randy.