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From: maart@cs.vu.nl (Maarten Litmaath)
Newsgroups: comp.lang.c
Subject: CTRL(x) macro (was: Re: What is a constant expression)
Message-ID: <3786@solo6.cs.vu.nl>
Date: 23 Oct 89 18:19:35 GMT
References: <1219@crdos1.crd.ge.COM> <8891@goofy.megatest.UUCP>
Organization: V.U. Informatica, Amsterdam, the Netherlands
Lines: 16

djones@megatest.UUCP (Dave Jones) writes:
\...
\#define CNTL(c) ((c) & 037)

I prefer:

	#define CTRL(x) ((x) ^ 0100)

...so you can say

	CTRL('?')

to get DEL.
-- 
A symbolic link is a POINTER to a file, | Maarten Litmaath @ VU Amsterdam:
 a hard link is the file system's GOTO. | maart@cs.vu.nl, mcsun!botter!maart