Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!uwvax!oddjob!mimsy!chris
From: chris@mimsy.UUCP (Chris Torek)
Newsgroups: comp.lang.c
Subject: Re: sizes, bitfields, etc
Message-ID: <12982@mimsy.UUCP>
Date: 12 Aug 88 22:44:57 GMT
References: <214@ISIDAPS5.UUCP> <9641@dartvax.Dartmouth.EDU> <62505@sun.uucp> <584@philmds.UUCP>
Organization: U of Maryland, Dept. of Computer Science, Coll. Pk., MD 20742
Lines: 20

>In article <12933@mimsy.UUCP> I wrote
>>where ROUNDUP is a compile-time expression ...
>>	#define ROUNDUP(x, y)  (floor(((x) + (y) - 1) / (y)) * (y))

In article <584@philmds.UUCP> leo@philmds.UUCP (Leo de Wit) writes:
>Compile-time expression? This would imply that the compiler knows of floor()

Oops.  I originally wrote

	ROUNDUP a b: floor( ... )

or something equally un-C-like (since this was intended not to be a
C-centric argument), and I put in the floor() to indicate that the
division should not be doing in rational or fixed- or floating-point
arithmetic.  I then decided that this would be overly confusing and
switched to the C syntax, without removing the floor() or adding any
explanation.
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris@mimsy.umd.edu	Path:	uunet!mimsy!chris