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AK: Add is_power_of_2 helper

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Pankaj Raghav 2022-01-29 12:45:21 +05:30 committed by Idan Horowitz
parent 3b27e28e67
commit 61027e5303
Notes: sideshowbarker 2024-07-17 20:02:08 +09:00 
Author: https://github.com/Panky-codes
Commit: https://github.com/SerenityOS/serenity/commit/61027e53037
Pull-request: https://github.com/SerenityOS/serenity/pull/12198
Reviewed-by: https://github.com/IdanHo
1 changed files with 6 additions and 0 deletions
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6
AK/StdLibExtras.h
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@ -16,6 +16,12 @@ constexpr auto round_up_to_power_of_two(T value, U power_of_two) requires(IsInte
return ((value - 1) & ~(power_of_two - 1)) + power_of_two;
}
template<typename T>
constexpr bool is_power_of_two(T value) requires(IsIntegral<T>)
{
return value && !((value) & (value - 1));
}
// HACK: clang-format does not format this correctly because of the requires clause above.
// Disabling formatting for that doesn't help either.
//