From mboxrd@z Thu Jan 1 00:00:00 1970 From: lm at mcvoy.com (Larry McVoy) Date: Mon, 24 Feb 2020 07:19:29 -0800 Subject: [COFF] Fwd: Old and Tradition was [TUHS] V9 shell In-Reply-To: <20200224104010.2d8510cfe00da71439f5d05e@sjmulder.nl> References: <20200212030152.GJ852@mcvoy.com> <20200224104010.2d8510cfe00da71439f5d05e@sjmulder.nl> Message-ID: <20200224151929.GJ30841@mcvoy.com> On Mon, Feb 24, 2020 at 10:40:10AM +0100, Sijmen J. Mulder wrote: > Larry McVoy wrote: > > Fortran programmers are formally trained (at least I > > was, there was a whole semester devoted to this) in accumulated errors. > > You did a deep dive into how to code stuff so that the error was reduced > > each time instead of increased. It has a lot to do with how floating > > point works, it's not exact like integers are. > > I was unaware that there's formal training to be had around this but > it's something I'd like to learn more about. Any recommendations on > materials? I don't mind diving into Fortran itself either. My training was 35 years ago, I have no idea where to go look for this stuff now. I googled and didn't find much. I'd go to the local University that teaches Fortran and ask around.