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std::max_align_t

STD：最多[医]对齐[医]T型

Defined in header ​​
typedef /*implementation-defined*/ max_align_t;​(since C++11)

std::max_align_t是POD类型对齐要求至少有每种标量类型的严格%28和%29一样大。

注记

由分配函数返回的指针，如std::malloc对任何对象都适当地对齐，这意味着它们至少与std::max_align_t...

std::max_align_t通常是最大标量类型的同义词，它是long double在大多数平台上，其对齐的需求要么是8，要么是16。

例

二次

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

二次

可能的产出：

二次

16

二次

另见

alignof operatorqueries alignment requirements of a type (since C++11)
alignment_of (C++11)obtains the type's alignment requirements (class template)
is_scalar (C++11)checks if a type is scalar type (class template)

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http：//en.cppreference.com/w/cpp/type/max[医]对齐[医]T型

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