From owner-sc22wg5@open-std.org Mon Dec 6 18:26:11 2010 Return-Path: X-Original-To: sc22wg5-dom8 Delivered-To: sc22wg5-dom8@www2.open-std.org Received: by www2.open-std.org (Postfix, from userid 521) id 083D8C3BA1C; Mon, 6 Dec 2010 18:26:11 +0100 (CET) X-Original-To: sc22wg5@open-std.org Delivered-To: sc22wg5@open-std.org Received: from smtp.cims.nyu.edu (SMTP.CIMS.NYU.EDU [128.122.49.100]) by www2.open-std.org (Postfix) with ESMTP id 318FBC178DA for ; Mon, 6 Dec 2010 18:26:10 +0100 (CET) Received: from donev.cims.nyu.edu (donev.cims.nyu.edu [128.122.80.20]) (authenticated bits=0) by smtp.cims.nyu.edu (8.14.3/8.13.8) with ESMTP id oB6HQ9Tu026391 (version=TLSv1/SSLv3 cipher=AES256-SHA bits=256 verify=NOT) for ; Mon, 6 Dec 2010 12:26:09 -0500 (EST) Message-ID: <4CFD1CB1.5000007@courant.nyu.edu> Date: Mon, 06 Dec 2010 12:26:09 -0500 From: Aleksandar Donev User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.9.2.11) Gecko/20101013 Thunderbird/3.1.5 MIME-Version: 1.0 To: WG5 Subject: Re: (j3.2006) (SC22WG5.4370) [ukfortran] WG5 informal ballot re Interop. TR References: <20101108175805.5B97EC178E5@www2.open-std.org> <20101206103130.1AE8AC178E3@www2.open-std.org> <20101206134148.834A7C178E4@www2.open-std.org> <4CFD0D53.8030501@cray.com> In-Reply-To: <4CFD0D53.8030501@cray.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-sc22wg5@open-std.org Precedence: bulk On 12/06/10 11:20, Bill Long wrote: > However, one of the original desires of the MPI users was to have > > type(*),dimension(*) > > map to a void * dummy parameter and have only the address passed. I > think this would be an often used form. It may be important to also emphasize that I am not proposing changing that. One can still write a Fortran wrapper that has "type(*),dimension(*)" and call C routines that have "void*". If you only want to pass an address around it will work great. You have an "ignore type and kind" directive. The only issue here is what happens when descriptors are brought in the mix. That is, the real issue is the "ignore rank" thing, which is now intermingled with the type because the descriptor contains TKR information, not just TK or just R. Aleks -- Aleksandar Donev, Assistant Professor of Mathematics Courant Institute of Mathematical Sciences Office: 909 Warren Weaver Hall, New York University E-mail: donev@courant.nyu.edu Phone: (212) 992-7315; Fax: (212) 995-4121 Mailing address: 251 Mercer St, New York, NY 10012 Web: http://cims.nyu.edu/~donev