Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uwm.edu!ux1.cso.uiuc.edu!aries!mcdonald From: mcdonald@aries.scs.uiuc.edu (Doug McDonald) Newsgroups: comp.arch Subject: Re: 386 Clones [really: IEEE floating point & various approaches; long] Message-ID: <1990Nov2.014513.21424@ux1.cso.uiuc.edu> Date: 2 Nov 90 01:45:13 GMT References: <42597@mips.mips.COM> <4174@goanna.cs.rmit.oz.au> <42618@mips.mips.COM> Sender: news@ux1.cso.uiuc.edu (News) Organization: School of Chemical Sciences, Univ. of Illinois at Urbana-Champaign Lines: 11 In article <42618@mips.mips.COM> mash@mips.COM (John Mashey) writes: > >Now, how about input from people who actually develop FP programs: >a) Do you use traps for SIGFPE, or not? No. In my scientific codes, the correct answer for an underflow is zero, and I test for zero before I divide, if this could ever happen in normal use. In very rare cases I have seen NaNs and Infs. These imply to me that there is a bug in my code. So I debug it. Doug McDonald