Subject: [boost] Fixed point structure size
From: Soren Holstebroe (holstebroe_at_[hidden])
Date: 2009-06-25 15:46:49
Hi,
An important feature of the fixed point template is that it takes up
no more space than the underlying integer.
It should be possible to use reinterpret_cast to convert a third party
integer pointer (representing fixed ints) to a fixed point template
pointer.
The way I ensure that in my fixed point template is with a #pragma:
#pragma pack(push, 1)
... template struct ...
#pragma pack(pop)
This is supported by MSVC++ as well as gcc. However it is only defacto
standard, so it might not work on any other compiler.
Is there a more standard way to make sure that the struct is not
padded to some memory alignment size?
Soren