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048fa2df92
This patch implements ffs, __ffs, fls, __fls using __builtin_* gcc functions. These header files can be used by other architectures that rely on the gcc builtins. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Arnd Bergmann <arnd@arndb.de>
18 lines
371 B
C
18 lines
371 B
C
#ifndef _ASM_GENERIC_BITOPS_BUILTIN_FFS_H_
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#define _ASM_GENERIC_BITOPS_BUILTIN_FFS_H_
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/**
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* ffs - find first bit set
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* @x: the word to search
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*
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* This is defined the same way as
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* the libc and compiler builtin ffs routines, therefore
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* differs in spirit from the above ffz (man ffs).
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*/
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static __always_inline int ffs(int x)
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{
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return __builtin_ffs(x);
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}
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#endif
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