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=-0.9 required=5.0 tests=BAYES_00,FORGED_GMAIL_RCVD, FREEMAIL_FROM autolearn=no autolearn_force=no version=3.4.4 X-Google-Thread: 103376,62c570a508b79271 X-Google-Attributes: gid103376,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news1.google.com!news1.google.com!postnews.google.com!k37g2000hsf.googlegroups.com!not-for-mail From: amado.alves@gmail.com Newsgroups: comp.lang.ada Subject: Re: Symmetric matrices only! Date: Fri, 18 Apr 2008 08:19:25 -0700 (PDT) Organization: http://groups.google.com Message-ID: <542378f1-1b00-4a46-9c78-60b69d1882d2@k37g2000hsf.googlegroups.com> References: <2dfded9f-aa30-4b25-ba2b-6e0d7f6f0fab@a1g2000hsb.googlegroups.com> <480823e4_3@news.bluewin.ch> <09c77183-3614-4a69-ad21-56a0abe954ab@e67g2000hsa.googlegroups.com> NNTP-Posting-Host: 213.13.106.28 Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: posting.google.com 1208531966 24687 127.0.0.1 (18 Apr 2008 15:19:26 GMT) X-Complaints-To: groups-abuse@google.com NNTP-Posting-Date: Fri, 18 Apr 2008 15:19:26 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: k37g2000hsf.googlegroups.com; posting-host=213.13.106.28; posting-account=3cDqWgoAAAAZXc8D3pDqwa77IryJ2nnY User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10_4_11; en) AppleWebKit/525.13 (KHTML, like Gecko) Version/3.1 Safari/525.13,gzip(gfe),gzip(gfe) Xref: g2news1.google.com comp.lang.ada:20987 Date: 2008-04-18T08:19:25-07:00 List-Id: Thanks all for the excellent replies. Incidentally, I found out that I do *not* have Generic_Real_Arrays on my GNAT GPL 2006 on Mac OS X 10.4 anyway, so now I have the added problem of installing GPL 2007 in the hopes... (I have other problems that I can solve with the Solve function, and eventually I may reformat the eigenproblem likewise, or work with two symmetric matrices in lieu of one nonsymmetric). Or else I shall try the BLAS or another tool suggested here. For the record, the matrices are of real numbers, they represent hypertexts, and normally the large matrices are sparse. Thanks a lot.