align

Directs the compiler to align the variable to a specified boundary and a specified offset.

Syntax

Windows* OS:

__declspec(align(n))

Linux* OS:

__attribute__((aligned(n)))

For portability on Linux* OS, you should use the syntax form __attribute__((aligned(n))). This form is compatible with the GNU compiler.

Arguments

n

Specifies the alignment. The compiler will align the variable to an n-byte boundary.

Description

This keyword directs the compiler to align the variable to an n-byte boundary.

Note

If you require 8-byte alignment, we recommend you specify 16 for n, instead of 8. When 8 is used, the compiler interprets the value as a suggestion and you may not get the requested 8-byte alignment, depending on various heuristics.

Para obtener información más completa sobre las optimizaciones del compilador, consulte nuestro Aviso de optimización.