From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,FREEMAIL_FROM
	autolearn=unavailable autolearn_force=no version=3.4.4
X-Received: by 10.129.73.198 with SMTP id w189mr6325787ywa.5.1446542139682;
        Tue, 03 Nov 2015 01:15:39 -0800 (PST)
X-Received: by 10.182.227.200 with SMTP id sc8mr97161obc.10.1446542139575;
 Tue, 03 Nov 2015 01:15:39 -0800 (PST)
Path: 
 eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!news.eternal-september.org!mx02.eternal-september.org!feeder.eternal-september.org!news.glorb.com!peer03.iad.highwinds-media.com!news.highwinds-media.com!feed-me.highwinds-media.com!m48no4512607qgd.0!news-out.google.com!z4ni44877ign.0!nntp.google.com!i2no2094102igv.0!postnews.google.com!glegroupsg2000goo.googlegroups.com!not-for-mail
Newsgroups: comp.lang.ada
Date: Tue, 3 Nov 2015 01:15:39 -0800 (PST)
In-Reply-To: <6a1eb518-801f-4a1d-af55-e122c2570b12@googlegroups.com>
Complaints-To: groups-abuse@google.com
Injection-Info: glegroupsg2000goo.googlegroups.com;
 posting-host=2a02:2ab8:224:1:78a7:d20f:ee21:e463;
 posting-account=6yLzewoAAABoisbSsCJH1SPMc9UrfXBH
NNTP-Posting-Host: 2a02:2ab8:224:1:78a7:d20f:ee21:e463
References: <cb181260-a5d3-4b5b-9a40-c925f7100b93@googlegroups.com>
 <n19m0m$hgm$1@loke.gir.dk>
 <6a1eb518-801f-4a1d-af55-e122c2570b12@googlegroups.com>
User-Agent: G2/1.0
MIME-Version: 1.0
Message-ID: <794ea9f1-a067-4b9d-bbb6-15c454cec6b7@googlegroups.com>
Subject: Re: Understanding generic package functions
From: briot.emmanuel@gmail.com
Injection-Date: Tue, 03 Nov 2015 09:15:39 +0000
Content-Type: text/plain; charset=ISO-8859-1
X-Received-Bytes: 1465
X-Received-Body-CRC: 2516349974
Xref: news.eternal-september.org comp.lang.ada:28194
Date: 2015-11-03T01:15:39-08:00
List-Id: <comp.lang.ada>


One you have instantiated the Math package, as suggested by Jeffrey, you need to add a "use" clause for it:

    use Math;

At this point, "**" becomes visible. Your use clause on Ada.Numerics does not play that role.