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
	=
Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm
Sender: cygwin-owner@cygwin.com
Mail-Followup-To: cygwin@cygwin.com
Message-ID: <52FBC740.8090602@gmail.com>
Date: Wed, 12 Feb 2014 20:10:56 +0100
From: Marco Atzeri <marco.atzeri@gmail.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@cygwin.com
Subject: Re: g77 on cygwin64
References: <52FAF082.6020805@appstate.edu> <52FB0686.8080403@gmail.com> <52FB13E2.1070107@appstate.edu> <724410821.20140212111451@mtu-net.ru> <CAMCbSMoqb_TsY3BQSU-AwnCOuCYecwCw4YexBQuUhbAbpSNDQg@mail.gmail.com> <52FB8E3C.3030704@appstate.edu> <52FBAC0B.8000106@gmail.com> <52FBB0F8.80606@molconn.com>
In-Reply-To: <52FBB0F8.80606@molconn.com>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit


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