Kenneth> roundup_pow_of_two uses fls, but fls takes an "int"
Kenneth> argument. I think that function is buggy on 64-bit
Kenneth> arch. Is it an oversight or something?
Huh, looks like you're right. I never looked inside fls() before.
Yes, roundup_pow_of_two() should probably be fixed, since a naive
person (like me) would look at it and think it works on longs.
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