Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!rutgers!cmcl2!kramden.acf.nyu.edu!brnstnd
From: brnstnd@kramden.acf.nyu.edu (Dan Bernstein)
Newsgroups: comp.lang.c
Subject: Re: more on TRUE and FALSE (side-comment)
Message-ID: <14084:Sep2105:38:0890@kramden.acf.nyu.edu>
Date: 21 Sep 90 05:38:08 GMT
References: <quan.653570879@sol> <1990Sep18.163533.16008@zoo.toronto.edu> <181@thor.UUCP>
Organization: IR
Lines: 17

In article <181@thor.UUCP> scjones@thor.UUCP (Larry Jones) writes:
> In article <1990Sep18.163533.16008@zoo.toronto.edu>, henry@zoo.toronto.edu (Henry Spencer) writes:
> > My current favorite definition is:
> > #define	STREQ(a, b)	(*(a) == *(b) && strcmp((a), (b)) == 0)
> And it's slower than one that just calls strcmp every time if your
> compiler is smart enough to generate in-line code for strcmp!

Which is why it should be

#define STREQ(a,b)  ( *(a) == *(b) && *(a) && !strcmp((a)+1, (b)+1) )

instead.

Probably calling strcmp ``strdiff'' will answer the original question.
``if (strdiff(a,b))'' makes sense, right?

---Dan