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From: diamond@csl.sony.co.jp (Norman Diamond)
Newsgroups: comp.std.c
Subject: Re: What is a constant expression
Message-ID: <10972@riks.csl.sony.co.jp>
Date: 19 Oct 89 01:39:47 GMT
References: <1219@crdos1.crd.ge.COM>
Reply-To: diamond@riks. (Norman Diamond)
Organization: Sony Computer Science Laboratory Inc., Tokyo, Japan
Lines: 16

In article <1219@crdos1.crd.ge.COM> davidsen@crdos1.UUCP (bill davidsen) writes:

>	#define CNTL(c) ('c' & 037)
>While this work fine with pcc, the ANSI preprocessor doesn't expand it.

Another way around it is to edit all the calls to CNTL(c) to look like
CNTL('c'), which isn't too difficult a change.  Then the macro depends
on neither Reiser nor ANSI stringizing, and the expression is obviously
constant.  (Uh, obviously, obviously, hmm, can't find "obviously" in the
index to the draft standard, bet someone will bite us on this too.)

-- 
Norman Diamond, Sony Corp. (diamond%ws.sony.junet@uunet.uu.net seems to work)
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