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std::max_align_t

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Defined in header <cstddef>
typedef /*implementation-defined*/ max_align_t;
(a partir do C++ 11)
std::max_align_t é um tipo POD cujo alinhamento requisito é pelo menos tão rigorosas (tão grande), como a de qualquer tipo escalar.
Original:
std::max_align_t is a POD type whose alignment requirement is at least as strict (as large) as that of every scalar type.
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[editar] Notas

Ponteiros retornados por funções de alocação como std::malloc estão devidamente alinhados para qualquer objeto, o que significa que eles estejam alinhados, pelo menos, tão rigorosas quanto std::max_align_t.
Original:
Pointers returned by allocation functions such as std::malloc are suitably aligned for any object, which means they are aligned at least as strict as std::max_align_t.
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std::max_align_t é sinônimo com o maior tipo de escalar, que é long double na maioria das plataformas, e sua exigência de alinhamento ou é 8 ou 16.
Original:
std::max_align_t is usually synonymous with the largest scalar type, which is long double on most platforms, and its alignment requirement is either 8 or 16.
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[editar] Exemplo

#include <iostream>
#include <cstddef>
int main()
{
    std::cout << alignof(std::max_align_t) << '\n';
}

Output:

16

[editar] Veja também

alignof operator queries alignment requirements of a type (a partir do C++ 11) [edit]
obtém requisitos do tipo de alinhamento
Original:
obtains the type's alignment requirements
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(modelo de classe) [edit]
(C++11)
verifica se um tipo é tipo escalar
Original:
checks if a type is scalar type
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(modelo de classe) [edit]