From: "Curry, Matthew Leon" <mlcurry@sandia.gov>
To: "Daniel." <danielhilst@gmail.com>,
"linux-c-programming@vger.kernel.org"
<linux-c-programming@vger.kernel.org>
Subject: Re: [EXTERNAL] Is defined() macro portable or GNU only?
Date: Wed, 30 Sep 2015 21:27:46 +0000 [thread overview]
Message-ID: <D231AF64.FCEF%mlcurry@sandia.gov> (raw)
In-Reply-To: <CAF3SDA7TQOz9Vzk+iVzLn2SgxW22R-jARjJ+yzvYkSYXnzzM+A@mail.gmail.com>
It¹s part of ANSI C, and is described in K&R.
Matthew
On 9/30/15, 1:25 PM, "linux-c-programming-owner@vger.kernel.org on behalf
of Daniel." <linux-c-programming-owner@vger.kernel.org on behalf of
danielhilst@gmail.com> wrote:
>Hi all,
>
>I used to check definitions with #ifdef, but in cases where
>multiple macros are checked I use #if defined(foo) && defined(bar).
>Is this defined() check portable/standard? Or is some kind of
>extension added by GCC?
>
>Regards,
>- dhs
>--
>"Do or do not. There is no try"
> Yoda Master
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next prev parent reply other threads:[~2015-09-30 21:27 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-30 19:25 Is defined() macro portable or GNU only? Daniel.
2015-09-30 21:27 ` Curry, Matthew Leon [this message]
2015-10-01 13:11 ` [EXTERNAL] " Daniel.
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