Mailing-List: contact cygwin-help@cygwin.com; run by ezmlm 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 From: "Peter Kabal" To: Subject: Printf routine incorrectly prints NaN for -Inf Date: Mon, 11 Nov 2002 22:11:57 -0500 Organization: McGill University Message-ID: <000301c289f9$428771f0$a82ace84@research.pc.ece.mcgill.ca> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 gcc version 3.2 20020818 (prerelease) printf ("%g", log(0)); This prints "NaN" instead of "-Inf" as it should (and did in the past). A check of the bit pattern returned shows that that log(0) returns a bit pattern corresponding to "-Inf", but printf prints "NaN" instead. I am not sure which C library is being used (a bug report to gcc folks got the response that newlib is the culprit). However, the compiler option -print-libgcc-file-name tells me it is looking for libgcc.a. So I am confused as to who to report the bug to. Peter Kabal Kabal@ECE.McGill.CA (514) 398-7130 Electrical & Computer Engineering (514) 398-4470 (FAX) McGill University 3480 University, Montreal, Quebec, Canada H3A 2A7 -- Unsubscribe info: http://cygwin.com/ml/#unsubscribe-simple Bug reporting: http://cygwin.com/bugs.html Documentation: http://cygwin.com/docs.html FAQ: http://cygwin.com/faq/