Article View: comp.theory
Article #2068Re: Modulus (Re: hashing function for strings)
From: Karl Heuer
Date: Fri, 23 Feb 1990 21:35
Date: Fri, 23 Feb 1990 21:35
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In article <E*er-q@cs.psu.edu> callahan@mordor.endor.cs.psu.edu (Paul B. Callahan) writes: >After seeing enough mathematics, I was ultimately convinced that my intuition >was at fault. A similarly confusing point is that the negative of a negative number is positive. Ah, the memories of being a TA... >If we assume that floating point arithmetic is done using a sign-magnitude >representation [then truncate is probably easier than floor to implement]. But, given that most implementations use two's complement for integers, and even for floating-point exponents, why *is* sign-magnitude the standard for floating point significands? Karl W. Z. Heuer (karl@ima.ima.isc.com or harvard!ima!karl), The Walking Lint
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!think!snorkelwacker!spdcc!ima!haddock!karlReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!swrinde!zaphod.mps.ohio-state.edu!think!snorkelwacker!spdcc!ima!haddock!karl From: karl@haddock.ima.isc.com (Karl Heuer) Newsgroups: comp.theory,comp.misc,comp.lang.misc,comp.arch Subject: Re: Modulus (Re: hashing function for strings) Summary: why do we use sign-magnitude representation? Message-ID: <16014@haddock.ima.isc.com> Date: 23 Feb 90 21:35:51 GMT References: <Er$cfg@cs.psu.edu> <12099@goofy.megatest.UUCP> <98399@linus.UUCP> <E5$4$m@cs.psu.edu> <98717@linus.UUCP> <E*er-q@cs.psu.edu> Reply-To: karl@haddock.ima.isc.com (Karl Heuer) Organization: Interactive Systems, Cambridge, MA 02138-5302 Lines: 15