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Subject: Re: [PATCH v2 2/3] lib: Introduce 2 bit ops api: all_is_bit_{one,zero}
From: yalin wang <yalin.wang2010@gmail.com>
In-Reply-To: <1447915724-29709-3-git-send-email-hejianet@gmail.com>
Date: Thu, 19 Nov 2015 16:49:51 +0800
Cc: linux-kernel <linux-kernel@vger.kernel.org>,
        Linux-Arch <linux-arch@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Rasmus Villemoes <linux@rasmusvillemoes.dk>,
        Denys Vlasenko <dvlasenk@redhat.com>,
        Kyungmin Park <kyungmin.park@samsung.com>,
        Michal Nazarewicz <mina86@mina86.com>,
        Yury Norov <yury.norov@gmail.com>, Tejun Heo <tj@kernel.org>,
        Martin Kepplinger <martink@posteo.de>,
        George Spelvin <linux@horizon.com>, Ingo Molnar <mingo@kernel.org>,
        Arnd Bergmann <arnd@arndb.de>
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References: <1447915724-29709-1-git-send-email-hejianet@gmail.com> <1447915724-29709-3-git-send-email-hejianet@gmail.com>
To: Jia He <hejianet@gmail.com>
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> On Nov 19, 2015, at 14:48, Jia He <hejianet@gmail.com> wrote:
> 
> 
why not use memcmp() to compare with  0x0000000 or 0xffffffff  ?
memcmp() have better performance on some platforms .

Thanks

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