RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler-specific Features
Return value
__alignof__(type) returns the alignment requirement for the type type, or 1 if there is
no alignment requirement.
__alignof__(expr) returns the alignment requirement for the type of the lvalue expr, or
1 if there is no alignment requirement.
Example
int Alignment_0(void)
{
return __alignof__(int);
}
See also
• __ALIGNOF__.
4.1.3 __ALIGNOF__
The __ALIGNOF__ keyword returns the alignment requirement for a specified type, or for
the type of a specified object.
Syntax
__ALIGNOF__(type)
__ALIGNOF__(expr)
Where:
type
expr
is a type
is an lvalue.
Return value
__ALIGNOF__(type) returns the alignment requirement for the type type, or 1 if there is
no alignment requirement.
__ALIGNOF__(expr) returns the alignment requirement for the type of the lvalue expr, or
1 if there is no alignment requirement. The lvalue itself is not evaluated.
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