Re: int's and zero

Article View: comp.std.c

Article #4610

#4610

From: Clive D.W. Feather
Date: Thu, 11 Jan 1996 00:03

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In article <4d12qv$fir@natasha.rmii.com>,
Jerry Coffin <jcoffin@rmii.com> wrote:
> Yes -- in one's complement, `-0' is represented with all bits set to 1.
> With one's complement, the usual method of testing for 0 is something
> like: `if (x+0 == 0)' since the addition of 0 normally produces a
> positive 0.

The C Standard requires +0 and -0 to compare equal to each other.

-- 
Clive D.W. Feather                       | If you lie to the compiler,
clive@demon.net        (work, preferred) | it will get its revenge.
clive@stdc.demon.co.uk (home)            |   - Henry Spencer

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References: <4cth4e$4q@odin.funcom.no> <4cub1a$jbl@alterdial.UU.NET> <4d12qv$fir@natasha.rmii.com>

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Path: arc1-ca.pugleaf.net!stdc.demon.co.uk!clive
From: clive@stdc.demon.co.uk (Clive D.W. Feather)
Newsgroups: comp.std.c
Subject: Re: int's and zero
Date: Thu, 11 Jan 1996 00:03:42 GMT
Organization: Demon Internet Limited (personal account)
Message-ID: <DKzpI8.8Kx@stdc.demon.co.uk>
References: <4cth4e$4q@odin.funcom.no> <4cub1a$jbl@alterdial.UU.NET> <4d12qv$fir@natasha.rmii.com>
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