What is a constant expression

[Norman Diamond]

In article <1219 at crdos1.crd.ge.COM> davidsen at 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 at uunet.uu.net seems to work)
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