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ircd::util: Add powerof2() bithack.

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This commit is contained in:
Jason Volk 2017-11-15 17:28:23 -08:00
parent 6937e91fc3
commit 0da55e93aa
1 changed files with 7 additions and 0 deletions
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7
include/ircd/util.h
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@ -1269,5 +1269,12 @@ struct is_zero
};
constexpr bool
is_powerof2(const long long v)
{
return v && !(v & (v - 1LL));
}
} // namespace util
} // namespace ircd