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- stretch 4.9.168-1
| FLS64(9) | Basic C Library Functions | FLS64(9) |
NAME¶
fls64 - find last set bit in a 64-bit wordSYNOPSIS¶
int fls64(__u64 x);
ARGUMENTS¶
xthe word to search
DESCRIPTION¶
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.
COPYRIGHT¶
| April 2019 | Kernel Hackers Manual 4.9. |