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NAME
SYNOPSIS
ARGUMENTS
DESCRIPTION
COPYRIGHT
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jessie-backports
4.9.88-1+deb9u1~bpo8+1
stretch
4.9.144-3
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__FFS(9)
Basic C Library Functions
__FFS(9)
NAME
¶
__ffs - find first set bit in word
SYNOPSIS
¶
unsigned long __ffs(unsigned long
word
);
ARGUMENTS
¶
word
The word to search
DESCRIPTION
¶
Undefined if no bit exists, so code should check against 0 first.
COPYRIGHT
¶
May 2018
Kernel Hackers Manual 4.9.