From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTPS id 99AE0385841A for ; Fri, 3 Dec 2021 09:28:39 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.4.1 sourceware.org 99AE0385841A Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-388-AMDuRPq-ObOnReKr3kjvxg-1; Fri, 03 Dec 2021 04:28:34 -0500 X-MC-Unique: AMDuRPq-ObOnReKr3kjvxg-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id CAAD51853033; Fri, 3 Dec 2021 09:28:32 +0000 (UTC) Received: from tucnak.zalov.cz (unknown [10.39.194.188]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 3978F10016F5; Fri, 3 Dec 2021 09:28:31 +0000 (UTC) Received: from tucnak.zalov.cz (localhost [127.0.0.1]) by tucnak.zalov.cz (8.16.1/8.16.1) with ESMTPS id 1B39SSSd2581961 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NOT); Fri, 3 Dec 2021 10:28:29 +0100 Received: (from jakub@localhost) by tucnak.zalov.cz (8.16.1/8.16.1/Submit) id 1B39SPf82581960; Fri, 3 Dec 2021 10:28:25 +0100 Date: Fri, 3 Dec 2021 10:28:25 +0100 From: Jakub Jelinek To: Thomas Koenig Cc: gcc mailing list , David Edelsohn , Segher Boessenkool , "fortran@gcc.gnu.org" , Michael Meissner , Bill Schmidt Subject: Re: [power-ieee128] What should the math functions be annotated with? Message-ID: <20211203092825.GN2646553@tucnak> Reply-To: Jakub Jelinek References: <119d695e-c316-ba5f-a3ed-963f18a67e35@netcologne.de> <20211201205447.GD2646553@tucnak> MIME-Version: 1.0 In-Reply-To: X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline X-Spam-Status: No, score=-5.6 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H2, SPF_HELO_NONE, SPF_NONE, TXREP autolearn=unavailable autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: gcc@gcc.gnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Gcc mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 03 Dec 2021 09:28:41 -0000 On Fri, Dec 03, 2021 at 08:29:53AM +0100, Thomas Koenig wrote: > > On 01.12.21 21:54, Jakub Jelinek via Fortran wrote: > > > Inside of libgfortran, I think it should depend on some macro defined > > in libgfortran.h. > > #if defined(__powerpc64__) && __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__ \ > > && defined __GLIBC_PREREQ && __GLIBC_PREREQ (2, 32) > > then > > #define MATHFUNC(funcname) __ ## funcname ## ieee128 > > (i.e. use the functions that will be used when one uses e.g. > > sinl in C when compiled with -mabi=ieeelongdouble), but I'm not sure > > if those need to be declared by libgfortran or math.h declares them). > > Otherwise (when libgfortran is compiled against glibc older than 2.32) > > it should use > > #define MATHFUNC(funcname) funcname ## q > > i.e. use the libquadmath APIs). > > The current Ubuntu does not have these functions: > > ubuntu@gcc-fortran:/lib/powerpc64le-linux-gnu$ nm libm.a 2>/dev/null | grep > ieee128 > ubuntu@gcc-fortran:/lib/powerpc64le-linux-gnu$ > > Will they be supplied in the future, or with the advanced toolchain? It is part of upstream glibc 2.32 (released Aug 2020) and later, see https://sourceware.org/git/?p=glibc.git;a=commit;h=051be01f6b41a1466b07ae4bd7f5894a8ec5fe67 distrowatch says that glibc 2.32 and later is in Ubuntu 21.04 and later. Jakub