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template <class T>
struct alignment_of : public integral_constant<std::size_t, ALIGNOF(T)> {};

Inherits: Class template alignment_of inherits from integral_constant<std::size_t, ALIGNOF(T)>, where ALIGNOF(T) is the alignment of type T.

Note: strictly speaking you should only rely on the value of ALIGNOF(T) being a multiple of the true alignment of T, although in practice it does compute the correct value in all the cases we know about.

Header: #include <boost/type_traits/alignment_of.hpp> or #include <boost/type_traits.hpp>


alignment_of<int> inherits from integral_constant<std::size_t, ALIGNOF(int)>.

alignment_of<char>::type is the type integral_constant<std::size_t, ALIGNOF(char)>.

alignment_of<double>::value is an integral constant expression with value ALIGNOF(double).

alignment_of<T>::value_type is the type std::size_t.