__FFS(9) Basic C Library Functions __FFS(9)NAME__ffs - find first set bit in wordSYNOPSISunsigned long __ffs(unsigned long word);ARGUMENTSword The word to searchDESCRIPTIONUndefined if no bit exists, so code should check against 0 first.COPYRIGHTKernel Hackers Manual 2.6. July 2010 __FFS(9)
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