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std::align

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< cpp‎ | memory

 
 
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initializer_list(C++11)
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Relational operators
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rel_ops::operator!=
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Pairs and tuples
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pair
tuple(C++11)
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Swap, forward and move
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swap
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Gestión de memoria dinámica
Bajo la gestión de memoria de nivel
Los asignadores
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Allocators
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allocator
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Inicializar el almacenamiento
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Uninitialized storage
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Varios
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Miscellaneous
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pointer_traits(C++11)
addressof(C++11)
align(C++11)
C Library
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C Library
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Defined in header <memory>
void* align( std::size_t alignment,

             std::size_t size,
             void*& ptr,

             std::size_t& space );
(desde C++11)
Si es posible encajar size bytes de almacenamiento alineado por alignment en el buffer apuntado por ptr con space longitud, la función modifica ptr para que apunte a la primera dirección posible de dicho almacenamiento alineados y disminuye space por el número de bytes utilizado para la alineación . Si no es posible (el búfer es demasiado pequeño), align no hace nada .
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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Contenido

[editar] Parámetros

alignment -
la alineación deseada
Original:
the desired alignment
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size -
el tamaño del almacenamiento a ser alineados
Original:
the size of the storage to be aligned
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ptr -
puntero a un almacenamiento contigua de bytes space por lo menos
Original:
pointer to contiguous storage of at least space bytes
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space -
el tamaño de la memoria intermedia en la cual operar
Original:
the size of the buffer in which to operate
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[editar] Valor de retorno

El valor ajustado de ptr, o el valor de puntero nulo si el espacio es demasiado pequeño .
Original:
The adjusted value of ptr, or null pointer value if the space provided is too small.
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[editar] Ejemplo

[editar] Ver también

alignof operator queries alignment requirements of a type (desde C++11) [edit]
alignas especificador
especifica que el almacenamiento para la variable debe estar alineado por (C++11) cantidad específica
Original:
specifies that the storage for the variable should be aligned by specific amount (C++11)
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[edit]
lo contrario. define el tipo adecuado para su uso como almacenamiento sin inicializar para tipos de tamaño dado
Original:
defines the type suitable for use as uninitialized storage for types of given size
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(clase de plantilla) [edit]