Article View: comp.arch
Article #3332Re: Intel 860 Architecture
From: Donald Lindsay
Date: Wed, 13 Dec 1989 16:17
Date: Wed, 13 Dec 1989 16:17
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In article <112400013@uxa.cso.uiuc.edu> afgg6490@uxa.cso.uiuc.edu writes: > > Use of N-R reciprocal algorithms was set back quite a bit by >IEEE FP's exactness requirements: a true remainder is needed for >correct rounding. The i860 supports some IEEE things in software. That is, the logic is in trap handlers, rather than on the chip. This software is not yet available for divide. So, multiplies and adds can underflow, but divides can't. -- Don D.C.Lindsay Carnegie Mellon Computer Science
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arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!cs.utexas.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!MATHOM.GANDALF.CS.CMU.EDU!lindsayReferences:
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Path: arc1-ca.pugleaf.net!utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!cs.utexas.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!MATHOM.GANDALF.CS.CMU.EDU!lindsay From: lindsay@MATHOM.GANDALF.CS.CMU.EDU (Donald Lindsay) Newsgroups: comp.arch Subject: Re: Intel 860 Architecture Keywords: divide rrounding Message-ID: <7326@pt.cs.cmu.edu> Date: 13 Dec 89 16:17:41 GMT References: <3818@convex.UUCP> <112400013@uxa.cso.uiuc.edu> Organization: Carnegie-Mellon University, CS/RI Lines: 13