common: alignment: Add a helper function for generic alignment checking.

This commit is contained in:
bunnei 2020-03-31 14:15:43 -04:00
parent ad48ebb2c8
commit b838e58d63

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@ -38,6 +38,13 @@ constexpr bool IsWordAligned(T value) {
return (value & 0b11) == 0; return (value & 0b11) == 0;
} }
template <typename T>
constexpr bool IsAligned(T value, std::size_t alignment) {
using U = typename std::make_unsigned<T>::type;
const U mask = static_cast<U>(alignment - 1);
return (value & mask) == 0;
}
template <typename T, std::size_t Align = 16> template <typename T, std::size_t Align = 16>
class AlignmentAllocator { class AlignmentAllocator {
public: public: