From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Mon, 19 Apr 2010 20:26:26 +0200
From: tlaronde@polynum.com
To: Fans of the OS Plan 9 from Bell Labs <9fans@9fans.net>
Message-ID: <20100419182626.GA730@polynum.com>
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	<20100419181533.GA2071@polynum.com>
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Subject: Re: [9fans] Rounding off by one
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On Mon, Apr 19, 2010 at 08:15:33PM +0200, tlaronde@polynum.com wrote:
>
> Thanks for the note. But I think I have found the problem: a division by
> 2 supposed to be "floor" and that slips as (x + y) / 2: is there
> anything that guarantees that the result shall be floor, ceil or
> nearest? I find nothing in C89.

Replying to myself: K&R, C, A7.6 Multiplicative operators.

=> The problem is with negatives for which there is only a general rule.

--
        Thierry Laronde <tlaronde +AT+ polynum +dot+ com>
                      http://www.kergis.com/
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