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std::align

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C++
 
Utilities-Bibliothek
 
Dynamische Speicherverwaltung
Low-Level-Speicherverwaltung
Zuweiser
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Allocators
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allocator
allocator_traits(C++11)
allocator_arg_t(C++11)
allocator_arg(C++11)
uses_allocator(C++11)
scoped_allocator_adaptor(C++11)
Initialisierter Speicher
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Uninitialized storage
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uninitialized_copy
uninitialized_copy_n(C++11)
uninitialized_fill
uninitialized_fill_n
raw_storage_iterator
get_temporary_buffer
return_temporary_buffer
Intelligente Zeiger
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Smart pointers
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unique_ptr(C++11)
shared_ptr(C++11)
weak_ptr(C++11)
auto_ptr(veraltet)
owner_less(C++11)
enable_shared_from_this(C++11)
bad_weak_ptr(C++11)
default_delete(C++11)
Garbage Collection Unterstützung
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Garbage collection support
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declare_reachable(C++11)
undeclare_reachable(C++11)
declare_no_pointers(C++11)
undeclare_no_pointers(C++11)
pointer_safety(C++11)
get_pointer_safety(C++11)
Verschiedenes
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Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
C-Bibliothek
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C Library
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definiert in Header <memory>
void* align( std::size_t alignment,

             std::size_t size,
             void*& ptr,

             std::size_t& space );
 (seit C++11)
Wenn es möglich ist, size Byte Speicherplatz durch alignment in dem Puffer, um durch ausgerichtete ptr mit Länge space passen ändert die Funktion ptr um zu der ersten möglichen Anschrift dieser ausgerichtet Lagerung zeigen und abnimmt space durch die Anzahl von Bytes für die Ausrichtung verwendet . Wenn es unmöglich ist (der Puffer zu klein ist), tut align nichts .
Original:
If it is possible to fit size bytes of storage aligned by alignment into the buffer pointed to by ptr with length space, the function modifies ptr to point to the first possible address of such aligned storage and decreases space by the number of bytes used for alignment. If it is impossible (the buffer is too small), align does nothing.
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Inhaltsverzeichnis

[Bearbeiten] Parameter

alignment -
die gewünschte Ausrichtung
Original:
the desired alignment
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size -
die Größe des Speichers ausgerichtet werden
Original:
the size of the storage to be aligned
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ptr -
Zeiger auf zusammenhängender Speicherung von mindestens space Bytes
Original:
pointer to contiguous storage of at least space bytes
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space -
die Größe des Puffers, in dem zu bedienen
Original:
the size of the buffer in which to operate
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[Bearbeiten] Rückgabewert

Der eingestellte Wert der ptr oder Null-Zeiger-Wert, wenn der Platz zu klein ist .
Original:
The adjusted value of ptr, or null pointer value if the space provided is too small.
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[Bearbeiten] Beispiel

This section is incomplete
Reason: no example

[Bearbeiten] Siehe auch

alignof operator queries alignment requirements of a type (seit C++11) [edit]
alignas Spezifizierer
gibt an, dass der Speicher für die Variable durch bestimmte Menge (C++11) ausgerichtet werden soll
Original:
specifies that the storage for the variable should be aligned by specific amount (C++11)
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[edit]
(C++11)
definiert den Typ für die Verwendung als Speicher für initialisierten Arten von vorgegebener Größe
Original:
defines the type suitable for use as uninitialized storage for types of given size
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(Klassen-Template) [edit]
Von „https://de.cppreference.com/mwiki/index.php?title=cpp/memory/align&oldid=27222“