diff options
| author | Morph <39850852+Morph1984@users.noreply.github.com> | 2022-01-10 19:44:19 -0500 |
|---|---|---|
| committer | Morph <39850852+Morph1984@users.noreply.github.com> | 2022-01-11 16:01:12 -0500 |
| commit | d92b5fc435b5444314fc1ce407a908ba0222f318 (patch) | |
| tree | 09d1be56d9cb49ec7bbe0ff3663c5f0b9fd8ca84 /src | |
| parent | b3308830b217cbdd9638b11e8660d079e16b3f01 (diff) | |
common: bit_util: Add IsPow2 helper function
Makes use of std::has_single_bit() to check whether the value is a power of 2.
Diffstat (limited to 'src')
| -rw-r--r-- | src/common/bit_util.h | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/common/bit_util.h b/src/common/bit_util.h index eef8c1c5a7..f50d3308a9 100644 --- a/src/common/bit_util.h +++ b/src/common/bit_util.h @@ -46,6 +46,12 @@ template <typename T> } template <typename T> +requires std::is_unsigned_v<T> +[[nodiscard]] constexpr bool IsPow2(T value) { + return std::has_single_bit(value); +} + +template <typename T> requires std::is_integral_v<T> [[nodiscard]] T NextPow2(T value) { return static_cast<T>(1ULL << ((8U * sizeof(T)) - std::countl_zero(value - 1U))); |