Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.3 4.3bsd-beta 6/6/85; site ucbvax.ARPA Path: utzoo!watmath!clyde!cbosgd!ucbvax!harvard.harvard.edu!stew%lhasa From: stew%lhasa@HARVARD.HARVARD.EDU Newsgroups: fa.info-vax Subject: Re: another fortran problem? Message-ID: <8509202016.AA21880@UCB-VAX.ARPA> Date: Fri, 20-Sep-85 13:59:00 EDT Article-I.D.: UCB-VAX.8509202016.AA21880 Posted: Fri Sep 20 13:59:00 1985 Date-Received: Sun, 22-Sep-85 06:46:49 EDT Sender: usenet@ucbvax.ARPA Reply-To: info-vax@ucb-vax.arpa Organization: The ARPA Internet Lines: 7 Fortran programs which rely on the order of evaluation of expressions are in error. Checking a variable before calling a function in a logical expression like (a() .and. b) is a valid and valuable optimization. If you must ensure that function a() is always called, make it two separate if's or call it and save the value before testing. Stew