Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Path: utzoo!mnetor!uunet!husc6!rutgers!rochester!PT.CS.CMU.EDU!andrew.cmu.edu!ws1i+ From: ws1i+@andrew.cmu.edu (William Manchester Shubert) Newsgroups: comp.sys.atari.st Subject: Re: FILE I/O Message-ID: Date: Sun, 8-Nov-87 20:33:24 EST Article-I.D.: andrew.sVZFhYy00Xo9yaw0B= Posted: Sun Nov 8 20:33:24 1987 Date-Received: Wed, 11-Nov-87 03:12:51 EST Organization: Carnegie Mellon University Lines: 10 In-Reply-To: <2023@homxc.UUCP> As far as I can tell, it's up to you. The "F" functions are probably a bit faster, since they're just #defines that jump you right into the system stuff; the "f" functions, while it is true that they're more compatible with other environments, will probably be a bit slower since they go through some translation routines first. However, any extra time that the "f" functions take will probably be so small (as in less than a hundred machine instructions) that it won't matter (especially since the functions take forever, anyway, since they all need to do disk I/O). Anyway, there's your difference.