From: "Michal Nazarewicz" <mina86@mina86.com>
To: linux-c-programming@vger.kernel.org, Nicolas Kaiser <nikai@nikai.net>
Subject: Re: duplicated modulo
Date: Fri, 01 Apr 2011 11:50:35 +0200 [thread overview]
Message-ID: <op.vs86ylxn3l0zgt@mnazarewicz-glaptop> (raw)
In-Reply-To: <20110401114113.6e2e91af@absol.kitzblitz>
On Fri, 01 Apr 2011 11:41:13 +0200, Nicolas Kaiser wrote:
> I'm curious: a duplicated modulo operation can't possibly make
> any difference, can it?
>
> diff -u -p ./arch/powerpc/platforms/powermac/nvram.c
> /tmp/nothing/arch/powerpc/platforms/powermac/nvram.c
> --- ./arch/powerpc/platforms/powermac/nvram.c 2011-03-31
> 09:52:41.674292401 +0200
> +++ /tmp/nothing/arch/powerpc/platforms/powermac/nvram.c
> @@ -246,7 +246,6 @@ static u32 core99_calc_adler(u8 *buffer)
> high = 0;
> for (cnt=0; cnt<(NVRAM_SIZE-CORE99_ADLER_START); cnt++) {
> if ((cnt % 5000) == 0) {
> - high %= 65521UL;
> high %= 65521UL;
> }
> low += buffer[cnt];
It's not just a module. It's also an assignment.
--
Best regards, _ _
.o. | Liege of Serenely Enlightened Majesty of o' \,=./ `o
..o | Computer Science, Michal "mina86" Nazarewicz (o o)
ooo +-----<email/xmpp: mnazarewicz@google.com>-----ooO--(_)--Ooo--
next prev parent reply other threads:[~2011-04-01 9:50 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-01 9:41 duplicated modulo Nicolas Kaiser
2011-04-01 9:50 ` Michal Nazarewicz [this message]
2011-04-01 10:19 ` Nicolas Kaiser
2011-04-01 9:30 ` Bogdan Cristea
2011-04-01 10:28 ` Bastian Bloessl
2011-04-01 11:20 ` Michal Nazarewicz
2011-04-04 8:26 ` Hendrik Visage
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