From: setzer@rsdws3.herl.epa.gov (Woodrow Setzer) Subject: Re: Maths ruined when optimizing in gcc 18 Nov 1996 14:55:24 -0800 Sender: daemon@cygnus.com Approved: cygnus.gnu-win32@cygnus.com Distribution: cygnus Message-ID: Reply-To: setzer@rsdws3.herl.epa.gov Mime-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Content-Transfer-Encoding: QUOTED-PRINTABLE Original-To: "Pedro A. Aranda =?iso-8859-1?Q?Guti=E9rrez?=" Original-Cc: gnu-win32@cygnus.com In-Reply-To: <328CC678.19BC@tid.es> Original-Sender: owner-gnu-win32@cygnus.com On Fri, 15 Nov 1996, Pedro A. Aranda [iso-8859-1] Guti=E9rrez wrote: > ... > When I compile WITHOUT optimization, floating point > ops are ok. If I dare do any optimization, I always > get all sorts of errors. >=20 > Has anyone experieced a similar thing? This may be related. I am working with an f2c-converted version of dmngb.f, one of the routines for optimization from the ATT PORT library.=20 It compiles and works OK using gcc 2.7.2.1 under Solaris 2.3 on a Sun Sparc 20 using the option -O. Under cyg-win32 and the same option, the code compiles and runs without compile-time or run-time errors, but I get the wrong answer. If I omit the -O flag on the compiler invocation under cyg-win32, I get essentially the same answer as I do on the Sun.=20 -- R. Woodrow Setzer, Jr. Phone: 919-541-0128 Biometry Branch MD-55 FAX: 919-541-5394 National Health and Environmental Research Laboratory, US EPA Research Triangle Park, NC 27711 - For help on using this list, send a message to "gnu-win32-request@cygnus.com" with one line of text: "help".