[patch 11/47] generic fls64()

[Akinobu Mita <mita@miraclelinux.com>]

This patch introduces the C-language equivalent of the function:
int fls64(__u64 x);

In include/asm-generic/bitops/fls64.h

This code largely copied from:
include/linux/bitops.h

Signed-off-by: Akinobu Mita <mita@miraclelinux.com>
 include/asm-generic/bitops/fls64.h |   12 ++++++++++++
 1 files changed, 12 insertions(+)

Index: 2.6-rc/include/asm-generic/bitops/fls64.h
===================================================================
--- /dev/null
+++ 2.6-rc/include/asm-generic/bitops/fls64.h
@@ -0,0 +1,12 @@
+#ifndef _ASM_GENERIC_BITOPS_FLS64_H_
+#define _ASM_GENERIC_BITOPS_FLS64_H_
+
+static inline int fls64(__u64 x)
+{
+	__u32 h = x >> 32;
+	if (h)
+		return fls(h) + 32;
+	return fls(x);
+}
+
+#endif /* _ASM_GENERIC_BITOPS_FLS64_H_ */

--
-
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