From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 27246 invoked by alias); 25 Apr 2013 23:35:55 -0000 Mailing-List: contact glibc-bugs-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: glibc-bugs-owner@sourceware.org Received: (qmail 27191 invoked by uid 48); 25 Apr 2013 23:35:52 -0000 From: "carlos at redhat dot com" To: glibc-bugs@sourceware.org Subject: [Bug math/14412] Removal of sysdeps/x86_64/fpu/s_sincos.S causes regressions Date: Thu, 25 Apr 2013 23:35:00 -0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: glibc X-Bugzilla-Component: math X-Bugzilla-Keywords: X-Bugzilla-Severity: enhancement X-Bugzilla-Who: carlos at redhat dot com X-Bugzilla-Status: NEW X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: unassigned at sourceware dot org X-Bugzilla-Target-Milestone: 2.18 X-Bugzilla-Changed-Fields: CC Message-ID: In-Reply-To: References: X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated Content-Type: text/plain; charset="UTF-8" MIME-Version: 1.0 X-SW-Source: 2013-04/txt/msg00161.txt.bz2 http://sourceware.org/bugzilla/show_bug.cgi?id=14412 Carlos O'Donell changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |liubov.dmitrieva at gmail | |dot com, spoyarek at redhat | |dot com --- Comment #10 from Carlos O'Donell 2013-04-25 23:35:51 UTC --- (In reply to comment #9) > this is critical bug > it shouldn't be marked as enhancement If we fix sinf to be fast again it will be imprecise which is a critical bug for another class of users. There is no implementation that can satisfy all requirements from all users. At the very least the precise implementation is at least correct if slow. Therefore this is an enhancement request to make the implementation fast. We are working on the possibility of having 3 libm variants, fast, default, and precise. At that point -ffast-math will select the fast variant and provide a fast but imprecise implementation. Until then we need help looking into these performance issues to see if we can relax the feraiseexcept in some cases or optimize the code to call it less times. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.