X-Recipient: archive-cygwin AT delorie DOT com
DomainKey-Signature: a=rsa-sha1; c=nofws; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:message-id:date:from:mime-version:to:subject
	:references:in-reply-to:content-type:content-transfer-encoding;
	 q=dns; s=default; b=A1JrHwnwRJtt/dY45Ei6XvuYJBY3sM3YIedZfbd1wdg
	WUQUaLJsrLTXKZk2FJyAcwf4t3JLXcbUcyVTsbIsL5eTheifugwLMq9aIKqPWZTU
	xO3JESyNZixxEWZoSKH25G+rrMM4CLUVJS46OIdSOD8dCxqbd/TzYC9GUi5QM2Nk
	=
DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=sourceware.org; h=list-id
	:list-unsubscribe:list-subscribe:list-archive:list-post
	:list-help:sender:message-id:date:from:mime-version:to:subject
	:references:in-reply-to:content-type:content-transfer-encoding;
	 s=default; bh=l3p2p/as6zrhGjs+dwK8OivKZOw=; b=VdYnHA+9+gUSKJDgM
	50ZgUxenUTQiOq4zOLPogd20CULjCW2jKnOz3/gtFFUsly3n85/LNITtdDXaYdzh
	26dKbzJOD/nw/K7xWXSDxJ+ANtGi57G7aUA7LvvyO4EEkrNUs5+LtDHCCyyz0gCn
	41H6Ax6GSJrJiNd9lVpNzOj2ok=
Mailing-List: contact cygwin-help AT cygwin DOT com; run by ezmlm
List-Id: <cygwin.cygwin.com>
List-Subscribe: <mailto:cygwin-subscribe AT cygwin DOT com>
List-Archive: <http://sourceware.org/ml/cygwin/>
List-Post: <mailto:cygwin AT cygwin DOT com>
List-Help: <mailto:cygwin-help AT cygwin DOT com>, <http://sourceware.org/ml/#faqs>
Sender: cygwin-owner AT cygwin DOT com
Mail-Followup-To: cygwin AT cygwin DOT com
Delivered-To: mailing list cygwin AT cygwin DOT com
Authentication-Results: sourceware.org; auth=none
X-Virus-Found: No
X-Spam-SWARE-Status: No, score=-1.5 required=5.0 tests=AWL,BAYES_00,FREEMAIL_FROM,RCVD_IN_DNSWL_LOW,SPF_PASS autolearn=ham version=3.3.2
X-HELO: mail-ea0-f178.google.com
X-Received: by 10.14.174.193 with SMTP id x41mr4929862eel.87.1392232265749;        Wed, 12 Feb 2014 11:11:05 -0800 (PST)
Message-ID: <52FBC740.8090602@gmail.com>
Date: Wed, 12 Feb 2014 20:10:56 +0100
From: Marco Atzeri <marco DOT atzeri AT gmail DOT com>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.3.0
MIME-Version: 1.0
To: cygwin AT cygwin DOT com
Subject: Re: g77 on cygwin64
References: <52FAF082 DOT 6020805 AT appstate DOT edu> <52FB0686 DOT 8080403 AT gmail DOT com> <52FB13E2 DOT 1070107 AT appstate DOT edu> <724410821 DOT 20140212111451 AT mtu-net DOT ru> <CAMCbSMoqb_TsY3BQSU-AwnCOuCYecwCw4YexBQuUhbAbpSNDQg AT mail DOT gmail DOT com> <52FB8E3C DOT 3030704 AT appstate DOT edu> <52FBAC0B DOT 8000106 AT gmail DOT com> <52FBB0F8 DOT 80606 AT molconn DOT com>
In-Reply-To: <52FBB0F8.80606@molconn.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
X-IsSubscribed: yes



On 12/02/2014 18:35, LMH wrote:
>

>
>
>  > Coming back to your issue, it is really curious that gfortran compiles
>  > the code but behaves wrongly, I was expecting it rejects the code
>  > if not in line with latest standard.
>
> This happens on some of my code as well and is in many ways a far worse
> issue to deal with. Some of my code compiles and runs, but the floating
> point answers to many of the calculations are wrong. This makes the
> issue(s) very difficult to run down (and also makes me stick with gcc3
> like the posters colleagues).
>
> LMH
>

Could you share a test case ?
I found no difference in math behaviour on all the Fortran
codes in LAPACK and OCTAVE when we moved from G77 to GFORTRAN

I am really curious

Regards
Marco

--
Problem reports:       http://cygwin.com/problems.html
FAQ:                   http://cygwin.com/faq/
Documentation:         http://cygwin.com/docs.html
Unsubscribe info:      http://cygwin.com/ml/#unsubscribe-simple