linux-kernel - [PATCH v3 1/2] bsearch: avoid unneeded decrement arithmetic

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Message-Id: <28b3abe6d9a03d4251c0b42a3505c8bc5f861e69.1257778258.git.andre.goddard@gmail.com>
Date:	Mon,  9 Nov 2009 13:42:30 -0200
From:	André Goddard Rosa <andre.goddard@...il.com>
To:	tabbott@...lice.com, alan-jenkins@...fmail.co.uk,
	rusty@...tcorp.com.au, linux-kernel@...r.kernel.org
Cc:	André Goddard Rosa <andre.goddard@...il.com>
Subject: [PATCH v3 1/2] bsearch: avoid unneeded decrement arithmetic

Signed-off-by: André Goddard Rosa <andre.goddard@...il.com>
---
 lib/bsearch.c |    6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/bsearch.c b/lib/bsearch.c
index 2e70664..33cbba6 100644
--- a/lib/bsearch.c
+++ b/lib/bsearch.c
@@ -33,13 +33,13 @@
 void *bsearch(const void *key, const void *base, size_t num, size_t size,
 	      int (*cmp)(const void *key, const void *elt))
 {
-	int start = 0, end = num - 1, mid, result;
+	int start = 0, end = num, mid, result;
 
-	while (start <= end) {
+	while (start < end) {
 		mid = (start + end) / 2;
 		result = cmp(key, base + mid * size);
 		if (result < 0)
-			end = mid - 1;
+			end = mid;
 		else if (result > 0)
 			start = mid + 1;
 		else
-- 
1.6.5.2.153.g6e31f.dirty

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