From: Alexander Kuleshov <kuleshovmail@gmail.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>,
linux-kernel@vger.kernel.org,
Alexander Kuleshov <kuleshovmail@gmail.com>
Subject: [PATCH] lib/halfmd4: Use rol32 inline function in the ROUND macro
Date: Mon, 14 Sep 2015 01:00:32 +0600 [thread overview]
Message-ID: <1442170832-9316-1-git-send-email-kuleshovmail@gmail.com> (raw)
The <linux/bitops.h> provides rol32() inline function, let's use already
predefined function instead of direct expression.
Signed-off-by: Alexander Kuleshov <kuleshovmail@gmail.com>
---
lib/halfmd4.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/lib/halfmd4.c b/lib/halfmd4.c
index a8fe627..137e861 100644
--- a/lib/halfmd4.c
+++ b/lib/halfmd4.c
@@ -1,6 +1,7 @@
#include <linux/compiler.h>
#include <linux/export.h>
#include <linux/cryptohash.h>
+#include <linux/bitops.h>
/* F, G and H are basic MD4 functions: selection, majority, parity */
#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z))))
@@ -14,7 +15,7 @@
* Rotation is separate from addition to prevent recomputation
*/
#define ROUND(f, a, b, c, d, x, s) \
- (a += f(b, c, d) + x, a = (a << s) | (a >> (32 - s)))
+ (a += f(b, c, d) + x, a = rol32(a, s))
#define K1 0
#define K2 013240474631UL
#define K3 015666365641UL
--
2.5.0
reply other threads:[~2015-09-13 19:01 UTC|newest]
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