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common: bit_util: Add IsPow2 helper function

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Makes use of std::has_single_bit() to check whether the value is a power of 2.
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Morph 2022-01-10 19:44:19 -05:00
parent b3308830b2
commit d92b5fc435
1 changed files with 6 additions and 0 deletions
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6
src/common/bit_util.h
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@ -45,6 +45,12 @@ template <typename T>
return static_cast<u32>(log2_f + static_cast<u64>((value ^ (1ULL << log2_f)) != 0ULL)); return static_cast<u32>(log2_f + static_cast<u64>((value ^ (1ULL << log2_f)) != 0ULL));
} }
template <typename T>
requires std::is_unsigned_v<T>
[[nodiscard]] constexpr bool IsPow2(T value) {
return std::has_single_bit(value);
}
template <typename T> template <typename T>
requires std::is_integral_v<T> requires std::is_integral_v<T>
[[nodiscard]] T NextPow2(T value) { [[nodiscard]] T NextPow2(T value) {