From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nicolas Kaiser Subject: duplicated modulo Date: Fri, 1 Apr 2011 11:41:13 +0200 Message-ID: <20110401114113.6e2e91af@absol.kitzblitz> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: Sender: linux-c-programming-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: linux-c-programming@vger.kernel.org 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]; Best regards, Nicolas Kaiser