From 921457fd65cc0f98c0f4b94e553f91d6527abc84 Mon Sep 17 00:00:00 2001
From: szaka <szaka>
Date: Sun, 2 Sep 2007 12:36:33 +0000
Subject: [PATCH] add ntfs_rol32 and ntfs_ror32

---
 include/ntfs-3g/bitmap.h | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/include/ntfs-3g/bitmap.h b/include/ntfs-3g/bitmap.h
index 56d1f64e..10b5f6c5 100644
--- a/include/ntfs-3g/bitmap.h
+++ b/include/ntfs-3g/bitmap.h
@@ -70,5 +70,27 @@ static __inline__ int ntfs_bitmap_clear_bit(ntfs_attr *na, s64 bit)
 	return ntfs_bitmap_clear_run(na, bit, 1);
 }
 
+/*
+ * rol32 - rotate a 32-bit value left
+ *
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static __inline__ u32 ntfs_rol32(u32 word, unsigned int shift)
+{
+        return (word << shift) | (word >> (32 - shift));
+}
+
+/*
+ * ror32 - rotate a 32-bit value right
+ *
+ * @word: value to rotate
+ * @shift: bits to roll
+ */
+static __inline__ u32 ntfs_ror32(u32 word, unsigned int shift)
+{
+        return (word >> shift) | (word << (32 - shift));
+}
+
 #endif /* defined _NTFS_BITMAP_H */