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authorAkinobu Mita <mita@miraclelinux.com>2006-03-26 13:39:13 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-03-26 20:57:11 +0400
commit3b9ed1a5d2d121f32d2cb4f2b05f1fc57c99c946 (patch)
treed8ea52d6b490c0e3b3851e1887c01700cc0115c6 /include/asm-generic/bitops
parent09020adb61416c4307de35941a9725a5e33d9beb (diff)
downloadlinux-3b9ed1a5d2d121f32d2cb4f2b05f1fc57c99c946.tar.xz
[PATCH] bitops: generic hweight{64,32,16,8}()
This patch introduces the C-language equivalents of the functions below: unsigned int hweight32(unsigned int w); unsigned int hweight16(unsigned int w); unsigned int hweight8(unsigned int w); unsigned long hweight64(__u64 w); In include/asm-generic/bitops/hweight.h This code largely copied from: include/linux/bitops.h Signed-off-by: Akinobu Mita <mita@miraclelinux.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-generic/bitops')
-rw-r--r--include/asm-generic/bitops/hweight.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/asm-generic/bitops/hweight.h b/include/asm-generic/bitops/hweight.h
new file mode 100644
index 000000000000..8be6f17d6a5c
--- /dev/null
+++ b/include/asm-generic/bitops/hweight.h
@@ -0,0 +1,9 @@
+#ifndef _ASM_GENERIC_BITOPS_HWEIGHT_H_
+#define _ASM_GENERIC_BITOPS_HWEIGHT_H_
+
+extern unsigned int hweight32(unsigned int w);
+extern unsigned int hweight16(unsigned int w);
+extern unsigned int hweight8(unsigned int w);
+extern unsigned long hweight64(__u64 w);
+
+#endif /* _ASM_GENERIC_BITOPS_HWEIGHT_H_ */