105 static constexpr T RoundDown(T x, typename std::decay<T>::type n) WARN_UNUSED;
108 static constexpr T RoundDown(T x, typename std::decay<T>::type n) {  in RoundDown()  argument
110       DCHECK_CONSTEXPR(IsPowerOfTwo(n), , T(0))  in RoundDown()
111       (x & -n);  in RoundDown()
115 static constexpr T RoundUp(T x, typename std::remove_reference<T>::type n) WARN_UNUSED;
118 static constexpr T RoundUp(T x, typename std::remove_reference<T>::type n) {  in RoundUp()  argument
119   return RoundDown(x + n - 1, n);  in RoundUp()
124 static inline T* AlignDown(T* x, uintptr_t n) WARN_UNUSED;
127 static inline T* AlignDown(T* x, uintptr_t n) {  in AlignDown()  argument
128   return reinterpret_cast<T*>(RoundDown(reinterpret_cast<uintptr_t>(x), n));  in AlignDown()
132 static inline T* AlignUp(T* x, uintptr_t n) WARN_UNUSED;
135 static inline T* AlignUp(T* x, uintptr_t n) {  in AlignUp()  argument
136   return reinterpret_cast<T*>(RoundUp(reinterpret_cast<uintptr_t>(x), n));  in AlignUp()
139 template<int n, typename T>
141   static_assert((n & (n - 1)) == 0, "n is not a power of two");  in IsAligned()
142   return (x & (n - 1)) == 0;  in IsAligned()
145 template<int n, typename T>
147   return IsAligned<n>(reinterpret_cast<const uintptr_t>(x));  in IsAligned()
151 static inline bool IsAlignedParam(T x, int n) {  in IsAlignedParam()  argument
152   return (x & (n - 1)) == 0;  in IsAlignedParam()