From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 111174 invoked by alias); 20 Mar 2017 06:53:01 -0000 Mailing-List: contact newlib-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: newlib-owner@sourceware.org Received: (qmail 109962 invoked by uid 89); 20 Mar 2017 06:52:57 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: Yes, score=6.3 required=5.0 tests=AWL,BAYES_50,FOREIGN_BODY,RCVD_IN_DNSWL_NONE,SPF_PASS,T_FILL_THIS_FORM_SHORT autolearn=no version=3.3.2 spammy=diese, brains, nachricht, Nachricht X-HELO: dedi548.your-server.de Received: from dedi548.your-server.de (HELO dedi548.your-server.de) (85.10.215.148) by sourceware.org (qpsmtpd/0.93/v0.84-503-g423c35a) with ESMTP; Mon, 20 Mar 2017 06:52:55 +0000 Received: from [88.198.220.130] (helo=sslproxy01.your-server.de) by dedi548.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.85_2) (envelope-from ) id 1cprBV-0006lQ-FU; Mon, 20 Mar 2017 07:52:53 +0100 Received: from [82.135.62.35] (helo=mail.embedded-brains.de) by sslproxy01.your-server.de with esmtpsa (TLSv1.2:DHE-RSA-AES256-GCM-SHA384:256) (Exim 4.84_2) (envelope-from ) id 1cprBU-0000Oj-0s; Mon, 20 Mar 2017 07:52:52 +0100 Received: from localhost (localhost.localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id 240462A1663; Mon, 20 Mar 2017 07:53:16 +0100 (CET) Received: from mail.embedded-brains.de ([127.0.0.1]) by localhost (zimbra.eb.localhost [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id 5mkjv_MBwCUc; Mon, 20 Mar 2017 07:53:13 +0100 (CET) Received: from localhost (localhost.localhost [127.0.0.1]) by mail.embedded-brains.de (Postfix) with ESMTP id C4C4E2A1664; Mon, 20 Mar 2017 07:53:13 +0100 (CET) Received: from mail.embedded-brains.de ([127.0.0.1]) by localhost (zimbra.eb.localhost [127.0.0.1]) (amavisd-new, port 10026) with ESMTP id JniD8gPL7Vu2; Mon, 20 Mar 2017 07:53:13 +0100 (CET) Received: from [192.168.96.129] (unknown [192.168.96.129]) by mail.embedded-brains.de (Postfix) with ESMTPSA id AAE232A1663; Mon, 20 Mar 2017 07:53:13 +0100 (CET) To: "newlib@sourceware.org" From: Sebastian Huber Subject: libm support for ARMv7 and VSQRT? Cc: Richard Earnshaw Message-ID: <58CF7C40.3060609@embedded-brains.de> Date: Mon, 20 Mar 2017 06:53:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: quoted-printable X-IsSubscribed: yes X-SW-Source: 2017/txt/msg00193.txt.bz2 Hello, there is some ARM-specific libm support for ARMv8: https://sourceware.org/git/gitweb.cgi?p=3Dnewlib-cygwin.git;a=3Dtree;f=3Dne= wlib/libm/machine/arm;h=3D5457f11619b2d67e8f56f352afb404c06a12c2bb;hb=3DHEAD The VFPv2+ supports a VSQRT instruction. Would it make sense to use it=20 for the sqrt() implementation, similar to https://sourceware.org/git/gitweb.cgi?p=3Dnewlib-cygwin.git;a=3Dblob;f=3Dne= wlib/libm/machine/aarch64/e_sqrt.c;h=3De4b7554ac1811bf04f726da198b913c0c305= 95ca;hb=3DHEAD https://sourceware.org/git/gitweb.cgi?p=3Dnewlib-cygwin.git;a=3Dblob;f=3Dne= wlib/libm/machine/aarch64/ef_sqrt.c;h=3D19fec952517769ad3851efef3b11dc6c02f= b7582;hb=3DHEAD ? --=20 Sebastian Huber, embedded brains GmbH Address : Dornierstr. 4, D-82178 Puchheim, Germany Phone : +49 89 189 47 41-16 Fax : +49 89 189 47 41-09 E-Mail : sebastian.huber@embedded-brains.de PGP : Public key available on request. Diese Nachricht ist keine gesch=C3=A4ftliche Mitteilung im Sinne des EHUG.