K 10
svn:author
V 5
peter
K 8
svn:date
V 27
2003-12-10T22:47:02.000000Z
K 7
svn:log
V 134
Use ffs(x) == popcnt(x ^ (x - 1)) to implement 64 bit ffsl().  gcc's
ffs() builtin uses this already but truncates the upper 32 bits.

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