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From: eachus@spectre.mitre.org (Robert I. Eachus)
Subject: Re: An interesting quote on Java and C++
Date: 1997/10/07
Message-ID: <EACHUS.97Oct7165034@spectre.mitre.org>#1/1
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References: <97092509394068@psavax.pwfl.com> <342AD83E.2C92@gsg.eds.com>
Organization: The Mitre Corp., Bedford, MA.
Newsgroups: comp.lang.ada
Date: 1997-10-07T00:00:00+00:00
List-Id: <comp.lang.ada>


In article <342AD83E.2C92@gsg.eds.com> "Shmuel (Seymour J.) Metz" <nospam@gsg.eds.com> writes:

   AFAIK the only processors around that are not two's complement are...

   Ever use floating point?  On most hardware today, floating point
uses a (biased)two's-complement exponent and a sign and magnitude
mantissa.  So if you use the floating point engine to do integer
arithmetic you get similar semantics to one's complement.  (Signed
zeros and range symmetric around zero.)

   Incidently Ada 95 makes it much easier to write code that does
exact integer arithmetic using floating point types.  This is
important on many processors as the floating-point multiplication unit
is faster than the integer multiply, and can be done in parallel with
other operations.
--

					Robert I. Eachus

with Standard_Disclaimer;
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function Message (Text: in Clever_Ideas) return Better_Ideas is...