On Friday, 9 January 2015 at 00:23:47 UTC, bearophile wrote:
Luc Bourhis:
With "auto a = new double[1000]", is there any guarantee that
a.ptr is aligned on a 16-byte boundary?
Arrays are aligned on a 16-byte.
Good news!
But if you slice them, this alignment can be broken.
Yes, of course. It's part of the game to prevent
alignment-breaking slices.
In past I suggested to put the alignment of an array in the D
type system, as an optional extra information (if the alignment
is not correct this causes compile-time errors in some cases
and some run-time errors when the slicing bounds are runtime
values).
I like the general idea. But it would seem more natural to me if
a slice returned an aligned array if possible, otherwise a
misaligned one.
Thanks for your thorough answer!
