fls649
Find last set bit in a 64-bit word
Usage
int fls64(__u64 x);
Arguments
x
the word to search
Overview
This is defined in a similar way as the libc and compiler builtin ffsll, but returns the position of the most significant set bit.
fls64(value) returns 0 if value is 0 or the position of the last set bit if value is nonzero. The last (most significant) bit is at position 64.
Releases
2 releases since Debian 8 (Jessie); the text changed 1 time.