summaryrefslogtreecommitdiffstats
path: root/include/linux/bitops.h
diff options
context:
space:
mode:
authorDavid S. Miller <davem@davemloft.net>2008-04-03 14:33:42 -0700
committerDavid S. Miller <davem@davemloft.net>2008-04-03 14:33:42 -0700
commit3bb5da3837cc1aa17736b05139c9a22c3794851a (patch)
treec92d5684a866542b1cb20641607ac1643ce03a47 /include/linux/bitops.h
parent7feb49c82a74bc7c091b8ab2a3f96baa33d08ece (diff)
parent9597362d354f8655ece324b01d0c640a0e99c077 (diff)
downloadop-kernel-dev-3bb5da3837cc1aa17736b05139c9a22c3794851a.zip
op-kernel-dev-3bb5da3837cc1aa17736b05139c9a22c3794851a.tar.gz
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
Diffstat (limited to 'include/linux/bitops.h')
-rw-r--r--include/linux/bitops.h40
1 files changed, 40 insertions, 0 deletions
diff --git a/include/linux/bitops.h b/include/linux/bitops.h
index 69c1edb..40d5473 100644
--- a/include/linux/bitops.h
+++ b/include/linux/bitops.h
@@ -65,6 +65,46 @@ static inline __u32 ror32(__u32 word, unsigned int shift)
return (word >> shift) | (word << (32 - shift));
}
+/**
+ * rol16 - rotate a 16-bit value left
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u16 rol16(__u16 word, unsigned int shift)
+{
+ return (word << shift) | (word >> (16 - shift));
+}
+
+/**
+ * ror16 - rotate a 16-bit value right
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u16 ror16(__u16 word, unsigned int shift)
+{
+ return (word >> shift) | (word << (16 - shift));
+}
+
+/**
+ * rol8 - rotate an 8-bit value left
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u8 rol8(__u8 word, unsigned int shift)
+{
+ return (word << shift) | (word >> (8 - shift));
+}
+
+/**
+ * ror8 - rotate an 8-bit value right
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static inline __u8 ror8(__u8 word, unsigned int shift)
+{
+ return (word >> shift) | (word << (8 - shift));
+}
+
static inline unsigned fls_long(unsigned long l)
{
if (sizeof(l) == 4)
OpenPOWER on IntegriCloud