NAME
fls − find last set bit in word
SYNOPSIS
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int fls(int x); |
ARGUMENTS
int x
the word to search
DESCRIPTION
This is defined in a similar way as the libc and compiler builtin ffs, but returns the position of the most significant set bit.
fls(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 32.