From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 91486 invoked by alias); 28 Sep 2016 21:32:55 -0000 Mailing-List: contact libc-alpha-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: libc-alpha-owner@sourceware.org Received: (qmail 91476 invoked by uid 89); 28 Sep 2016 21:32:55 -0000 Authentication-Results: sourceware.org; auth=none X-Virus-Found: No X-Spam-SWARE-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.2 spammy=Hx-languages-length:335 X-HELO: homiemail-a46.g.dreamhost.com Subject: Re: [PATCH 4/4] Use copysign instead of ternary for some sin/cos input ranges To: Manfred , libc-alpha@sourceware.org References: <1474998553-2366-1-git-send-email-siddhesh@sourceware.org> <1474998553-2366-5-git-send-email-siddhesh@sourceware.org> <343e148d-c0ce-c506-a040-a80301856af4@gmail.com> From: Siddhesh Poyarekar Message-ID: <2742dbbc-c885-0b9a-7486-218ed28eb617@gotplt.org> Date: Wed, 28 Sep 2016 21:32:00 -0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.2.0 MIME-Version: 1.0 In-Reply-To: <343e148d-c0ce-c506-a040-a80301856af4@gmail.com> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 7bit X-SW-Source: 2016-09/txt/msg00574.txt.bz2 On Wednesday 28 September 2016 05:59 AM, Manfred wrote: > The ternary uses m, __copysign uses x. It could be correct (I didn't > check the full context), but just in case... m essentially tracks the sign bit of x, so both checks are equivalent. Siddhesh