Mailing-List: contact cygwin-help AT sourceware DOT cygnus DOT com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner AT sources DOT redhat DOT com Delivered-To: mailing list cygwin AT sources DOT redhat DOT com From: Jim Heasley Message-Id: <200007102342.NAA03673@kulia.ifa.hawaii.edu> Subject: Net version 1.1.0: gcc 2.95.2-2 compiler bug To: cygwin AT sourceware DOT cygnus DOT com Date: Mon, 10 Jul 2000 13:42:35 -1000 (HST) X-Mailer: ELM [version 2.5 PL1] MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit In porting some astronomical data handling software from linux/unix to Cygwin (the latest nework release, 1.1.0 I believe), I discovered an error in how gcc 2.95.2-2 generates output of a floating or double variable set to 0.0 when formatted with a %E format. I didn't get any hits on this problem in the FAQ or mail lists. The following little test program illustrates the problem: main() { float value = 0.0; double dvalue = 0.0; printf("%11.0f %15.6f %13.5E\n",value,value,value); printf("%11.0f %15.6f %21.14E\n",dvalue,dvalue,dvalue); dvalue = value = 3.0; printf("%11.0f %15.6f %13.5E\n",value,value,value); printf("%11.0f %15.6f %21.14E\n",dvalue,dvalue,dvalue); } Under linux/unix, this little program produces the following output: 0 0.000000 0.00000E+00 0 0.000000 0.00000000000000E+00 3 3.000000 3.00000E+00 3 3.000000 3.00000000000000E+00 But the following is produced by the Cygwin gcc 2.95.2-2: 0 0.000000 0. 0 0.000000 0. 3 3.000000 3.00000E+00 3 3.000000 3.00000000000000E+00 When the output is sent to the terminal screen, the results for 0.0 with the E format come out as 0. followed by some "strange" characters and then E+00. Saving stdout to a file and then moving from Cygwin to linux, I find there are a bunch of control characters after the leading 0. and preceeding the E+00. Sorry, I don't know enough about compilers to even take a wack a solving this problem, but would very much appreciate a patch for the sources or a working binary with the patch incorporated if someone could kindly generate one. Thanks, Jim Heasley Professor of Astronomy Institute for Astronomy heasley AT hoku DOT ifa DOT hawaii DOT edu University of Hawaii phone: 808-956-6826 2680 Woodlawn Drive fax: 808-956-9580 Honolulu, HI 96822 -- Want to unsubscribe from this list? Send a message to cygwin-unsubscribe AT sourceware DOT cygnus DOT com