Mailing-List: contact cygwin-help@sourceware.cygnus.com; run by ezmlm List-Subscribe: List-Archive: List-Post: List-Help: , Sender: cygwin-owner@sources.redhat.com Delivered-To: mailing list cygwin@sources.redhat.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@sourceware.cygnus.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@hoku.ifa.hawaii.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@sourceware.cygnus.com