Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751400Ab3GFXgj (ORCPT ); Sat, 6 Jul 2013 19:36:39 -0400 Received: from mail-gh0-f182.google.com ([209.85.160.182]:37446 "EHLO mail-gh0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750959Ab3GFXgi (ORCPT ); Sat, 6 Jul 2013 19:36:38 -0400 From: Wedson Almeida Filho To: Rusty Russell , Tim Abbott Cc: linux-kernel@vger.kernel.org, Wedson Almeida Filho Subject: [PATCH] lib: One less subtraction in binary search iterations. Date: Sat, 6 Jul 2013 16:07:42 -0700 Message-Id: <1373152062-28164-1-git-send-email-wedsonaf@gmail.com> X-Mailer: git-send-email 1.7.9.5 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 908 Lines: 29 There is no functional change, but this change eliminates a subtraction that the compiler doesn't optimize out (as of gcc 4.7.3). Signed-off-by: Wedson Almeida Filho --- lib/bsearch.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/bsearch.c b/lib/bsearch.c index e33c179..3264146 100644 --- a/lib/bsearch.c +++ b/lib/bsearch.c @@ -37,7 +37,7 @@ void *bsearch(const void *key, const void *base, size_t num, size_t size, int result; while (start < end) { - size_t mid = start + (end - start) / 2; + size_t mid = (start + end) / 2; result = cmp(key, base + mid * size); if (result < 0) -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/