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From: dik@zuring.UUCP
Newsgroups: net.lang.c
Subject: Re: More Naughty Bits
Message-ID: <236@zuring.UUCP>
Date: Wed, 21-Aug-85 19:00:30 EDT
Article-I.D.: zuring.236
Posted: Wed Aug 21 19:00:30 1985
Date-Received: Sat, 24-Aug-85 17:15:56 EDT
References: <575@brl-tgr.ARPA> <132@rtp47.UUCP> <387@uwmcsd1.UUCP> <944@security.UUCP>
Reply-To: dik@zuring.UUCP (Dik T. Winter)
Distribution: net
Organization: CWI, Amsterdam
Lines: 12
Apparently-To: rnews@mcvax.LOCAL

In article <944@security.UUCP> jjg@security.UUCP (Jeff Glass) writes:
>> (discussion about machines where 0.0 does not have same representation as 0)
>
>The CDC Cyber series represents floating-point zero with the (12-bit)
>exponent zero.  It doesn't matter whether the (48-bit) mantissa is zero
>or not.

Not quite, for floating-point multiplication: yes; for floating-point
addition: no.  (There are numbers such that 2.0*x = 0.0, but x+x /= 0.0)
-- 
dik t. winter, cwi, amsterdam, nederland
UUCP: {seismo|decvax|philabs}!mcvax!dik