Re: Disappearing function call

Article View: net.lang.c

Article #9659

#9659

From: Lawrence W. McVoy
Date: Mon, 27 Oct 1986 06:38

37 lines
1396 bytes

In article <162@omepd> mcg@omepd.UUCP (Steven McGeady) writes:
>
>You guys are all thinking too hard.  
>
>	#define DEBUG	0	/* set to 1 to turn debugging on */
>	...
>	if (DEBUG) debug(...);
>
>Similarly, in the case of '#define DEBUG 1', the unneccesary test will
>be elided.
> 
>In the idiom of the original posting, the example is:
>
>	#define	debug	if(DEBUG) debug
>
>	debug(x,y,z);

I came into this late, so you might already know this, but try this on for 
size anyway:

# ifdef		DEBUG
#   define	debug(x)	fprintf x
# else
#   define	debug(x)
# endif

.....

	debug((stderr, "Control string", arg1, arg2, ... argn));

Cute, isn't it?  I stole it out of the src to enscript (adobe something or
other).
-- 
Larry McVoy 	        mcvoy@rsch.wisc.edu, 
      		        {seismo, topaz, harvard, ihnp4, etc}!uwvax!mcvoy

"They're coming soon!  Quad-stated guru-gates!"

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Message-ID: <2865@rsch.WISC.EDU>

Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!columbia!rutgers!uwvax!mcvoy

References: <357@cullvax.UUCP> <162@omepd>

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!columbia!rutgers!uwvax!mcvoy
From: mcvoy@rsch.WISC.EDU (Lawrence W. McVoy)
Newsgroups: net.lang.c
Subject: Re: Disappearing function call
Message-ID: <2865@rsch.WISC.EDU>
Date: Mon, 27-Oct-86 01:38:48 EST
Article-I.D.: rsch.2865
Posted: Mon Oct 27 01:38:48 1986
Date-Received: Mon, 27-Oct-86 20:45:49 EST
References: <357@cullvax.UUCP> <162@omepd>
Organization: U of Wisconsin CS Dept
Lines: 37

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