From owner-freebsd-standards  Wed Feb 19 16:29: 9 2003
Delivered-To: freebsd-standards@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 41EE237B401; Wed, 19 Feb 2003 16:29:08 -0800 (PST)
Received: from dilbert.robbins.dropbear.id.au (184.b.005.mel.iprimus.net.au [210.50.41.184])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 522C343F85; Wed, 19 Feb 2003 16:29:05 -0800 (PST)
	(envelope-from tim@robbins.dropbear.id.au)
Received: from dilbert.robbins.dropbear.id.au (fwgcy7ndw6krpjjt@localhost [127.0.0.1])
	by dilbert.robbins.dropbear.id.au (8.12.6/8.12.6) with ESMTP id h1K0SuFa037778;
	Thu, 20 Feb 2003 11:28:57 +1100 (EST)
	(envelope-from tim@dilbert.robbins.dropbear.id.au)
Received: (from tim@localhost)
	by dilbert.robbins.dropbear.id.au (8.12.6/8.12.6/Submit) id h1K0Sl9a037777;
	Thu, 20 Feb 2003 11:28:47 +1100 (EST)
	(envelope-from tim)
Date: Thu, 20 Feb 2003 11:28:47 +1100
From: Tim Robbins <tjr@FreeBSD.org>
To: Craig Rodrigues <rodrigc@attbi.com>
Cc: freebsd-standards@FreeBSD.org, kan@FreeBSD.org
Subject: Re: WCHAR_MIN and WCHAR_MAX not defined in <wchar.h>
Message-ID: <20030220112847.A36977@dilbert.robbins.dropbear.id.au>
References: <20030219223313.GA93707@attbi.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5.1i
In-Reply-To: <20030219223313.GA93707@attbi.com>; from rodrigc@attbi.com on Wed, Feb 19, 2003 at 05:33:13PM -0500
Sender: owner-freebsd-standards@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-standards.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-standards>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-standards>
X-Loop: FreeBSD.ORG

On Wed, Feb 19, 2003 at 05:33:13PM -0500, Craig Rodrigues wrote:

> Hi,
> 
> On my -CURRENT system, WCHAR_MIN and WCHAR_MAX are not defined
> in <wchar.h>.
> 
> What should they be defined to?
> 
> On my Linux system, I see that they are defined as:
> 
> #define __WCHAR_MIN     (-2147483647l - 1l)
> #define __WCHAR_MAX     (2147483647l)
> 
> 2147483647 is equal to 0x7FFFFFFF.
> 
> In another library, I have seen them defined as:
> 
> # define WCHAR_MIN ((wchar_t) 0)
> # define WCHAR_MAX (~WCHAR_MIN)
> 
> 
> What are the correct values for FreeBSD?

The correct values are the same as Linux but without the 'l' suffix:

#define	WCHAR_MIN	(-2147483647 - 1)
#define	WCHAR_MAX	2147483647

The second definition of WCHAR_MIN and WCHAR_MAX is incorrect because it
uses casts in the expression; IIRC, it needs to be possible to use these
values in preprocessor #if statements:

#if WCHAR_MIN == 0
/* wchar_t is unsigned */
#endif

I'll add a definition of WCHAR_MIN and WCHAR_MAX to <wchar.h> as soon as I
can find a clean (non-polluting) way of doing it.


Tim

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-standards" in the body of the message