std:: align_val_t
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Functions | ||||
(C++11)
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Classes | ||||
(C++11)
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align_val_t
(C++17)
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Types | ||||
Objects | ||||
(C++20)
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Object access | ||||
(C++17)
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Defined in header
<new>
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enum
class
align_val_t
:
std::
size_t
{
}
;
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(since C++17) | |
Both
new-expression
and
delete-expression
, when used with objects whose alignment requirement is greater than
__STDCPP_DEFAULT_NEW_ALIGNMENT__
, pass that alignment requirement as an argument of type
std::align_val_t
to the selected allocation/deallocation function.
Notes
Alignment (as obtained by alignof ) has the type std::size_t , but placement forms of allocation and deallocation functions that take std::size_t as an additional parameter are already in use, so this type is used instead.
Feature-test macro | Value | Std | Feature |
---|---|---|---|
__cpp_aligned_new
|
201606L | (C++17) | Dynamic memory allocation for over-aligned data |
See also
allocation functions
(function) |
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deallocation functions
(function) |