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Date: Tue, 21 Jun 2016 10:32:42 +0000
From: Joseph Myers <joseph@codesourcery.com>
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To: Yury Norov <ynorov@caviumnetworks.com>
CC: <libc-alpha@sourceware.org>, <linux-kernel@vger.kernel.org>,
        <arnd@arndb.de>, <catalin.marinas@arm.com>, <marcus.shawcroft@arm.com>,
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        <maxim.kuvyrkov@linaro.org>, <pinskia@gmail.com>,
        Andrew Pinski <apinski@cavium.com>
Subject: Re: [PATCH 27/27] Fix PTRDIFF_MIN/PTRDIFF_MIN and PTRDIFF_MIN for
 ILP32.
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References: <1466485631-3532-1-git-send-email-ynorov@caviumnetworks.com> <1466485631-3532-29-git-send-email-ynorov@caviumnetworks.com>
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On Tue, 21 Jun 2016, Yury Norov wrote:

> +#  ifdef __WORDSIZE32_PTRDIFF_LONG
> +#    define PTRDIFF_MIN		(-2147483647L-1)
> +#    define PTRDIFF_MAX		(2147483647L)
> +#  else
> +#    define PTRDIFF_MIN		(-2147483647-1)
> +#    define PTRDIFF_MAX		(2147483647)

We now use typo-proof conventions, preferring #if to #ifdef.  That is, 
make other bits/wordsize.h files define the macro to 0, so you can use #if 
here.

-- 
Joseph S. Myers
joseph@codesourcery.com