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std::max_align_t

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C++
 
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Elemento definito nell'header <cstddef>
typedef /*implementation-defined*/ max_align_t;
 (dal C++11)
std::max_align_t è un tipo POD cui allineamento requisito è almeno altrettanto rigorose (grande) come di ogni tipo scalare.
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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[modifica] Note

Puntatori restituiti dalle funzioni di allocazione, quali std::malloc come sono opportunamente allineati per qualsiasi oggetto, il che significa che sono allineati almeno altrettanto rigorose di quelle 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 solito è sinonimo di tipo scalare più grande, che è long double sulla maggior parte delle piattaforme, e la richiesta, l'allineamento è 8 o 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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[modifica] Esempio

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

Output: 

16

[modifica] Vedi anche

alignof operator queries alignment requirements of a type (dal C++11) [modifica]
(C++11)
ottiene requisiti di allineamento del tipo
Original:
obtains the type's alignment requirements
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(classe template) [modifica]
(C++11)
Verifica se un tipo è di tipo scalare
Original:
checks if a type is scalar type
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(classe template) [modifica]
Estratto da "https://it.cppreference.com/mwiki/index.php?title=cpp/types/max_align_t&oldid=27059"