X-Spam-Check-By: sourceware.org Reply-To: From: "Dave Korn" To: Cc: References: <19c433eb0708240916t48556c38k563ada260702e1fd@mail.gmail.com> Subject: RE: Problem with lroundf() Date: Fri, 24 Aug 2007 17:29:29 +0100 Message-ID: <02f101c7e66b$f1ba3530$2e08a8c0@CAM.ARTIMI.COM> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" X-Mailer: Microsoft Office Outlook 11 In-Reply-To: <19c433eb0708240916t48556c38k563ada260702e1fd@mail.gmail.com> Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm Precedence: bulk List-Id: List-Unsubscribe: List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@cygwin.com Mail-Followup-To: cygwin@cygwin.com Delivered-To: mailing list cygwin@cygwin.com Content-Transfer-Encoding: 8bit X-MIME-Autoconverted: from quoted-printable to 8bit by delorie.com id l7OGTrbk003413 On 24 August 2007 17:16, François-Xavier Coudert wrote: > Hi all, > > I think the following exhibits a bug in the lroundf() routine: Gahh, it's entirely likely, we keep finding cruft and corner cases in the fp math. Cygwin's maths routines come from newlib; post redirected there and fups-to set. > $ cat a.c > #include > #include > > int main (void) { > printf ("%d\n", (int) lroundf(0.7)); > } > > $ gcc a.c && ./a.exe > 0 > > The result of lroundf(0.7) should be 1, not 0. If lround() is used > instead of lroundf(), then it's working OK. > > I didn't file a PR in bugzilla because the bug report instructions say > to send a mail to this list, but I can open one if need be. > > Thanks, > FX Might get some spare time over the weekend to look at this with you, might not. Sorry I can't be more certain. cheers, DaveK -- Can't think of a witty .sigline today.... -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Problem reports: http://cygwin.com/problems.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/