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digitalmars.D - align number

reply "Katayama Hirofumi MZ" <katayama.hirofumi.mz gmail.com> writes:
version(Win64) {
const int align_number = 8;
} else {
const int align_number = 4;
}

align(align_number):

...long code...
Jun 07 2012
next sibling parent reply "Bernard Helyer" <b.helyer gmail.com> writes:
On Friday, 8 June 2012 at 01:46:15 UTC, Katayama Hirofumi MZ 
wrote:

 version(Win64) {
 const int align_number = 8;
 } else {
 const int align_number = 4;
 }

 align(align_number):

 ...long code...



align(size_t.sizeof); ?
Jun 07 2012
parent reply Denis Shelomovskij <verylonglogin.reg gmail.com> writes:
08.06.2012 7:31, Andrej Mitrovic написал:

 On 6/8/12, Bernard Helyer<b.helyer gmail.com>  wrote:

 Well that doesn't seem to work.



 Try this:

 version(Win64) {
 align(8):
 } else {
 align(4):
 }



This will not work as you expect. Just like
---
version(v1) { class }
else { struct }
S { int i; }
---
will not compile. It's D and there is no C preprocessor:
---
version(Win64) {
   align(8):
   ... aligned 8 ...
} else {
   align(4):
   ... aligned 4 ...
}
... default aligned ...
---

-- 
Денис В. Шеломовский
Denis V. Shelomovskij
Jun 07 2012
parent Dmitry Olshansky <dmitry.olsh gmail.com> writes:
On 08.06.2012 23:16, Kagamin wrote:

 template Aligned(alias Content)
 {
 static if(size_t.sizeof==4)
 align(4) struct Aligned{ mixin Content; }
 else
 align(8) struct Aligned{ mixin Content; }
 }



Ain't structs aligned on word boundary by default?

-- 
Dmitry Olshansky
Jun 08 2012
prev sibling next sibling parent "Bernard Helyer" <b.helyer gmail.com> writes:
On Friday, 8 June 2012 at 02:51:57 UTC, Bernard Helyer wrote:

 On Friday, 8 June 2012 at 01:46:15 UTC, Katayama Hirofumi MZ 
 wrote:

 version(Win64) {
 const int align_number = 8;
 } else {
 const int align_number = 4;
 }

 align(align_number):

 ...long code...



 align(size_t.sizeof); ?



Well that doesn't seem to work.
Jun 07 2012
prev sibling next sibling parent Andrej Mitrovic <andrej.mitrovich gmail.com> writes:
On 6/8/12, Bernard Helyer <b.helyer gmail.com> wrote:

 Well that doesn't seem to work.



Try this:

version(Win64) {
align(8):
} else {
align(4):
}
Jun 07 2012
prev sibling next sibling parent "Katayama Hirofumi MZ" <katayama.hirofumi.mz gmail.com> writes:
On Friday, 8 June 2012 at 04:16:18 UTC, Denis Shelomovskij wrote:

 It's D and there is no C preprocessor:
 ---
 version(Win64) {
   align(8):
   ... aligned 8 ...
 } else {
   align(4):
   ... aligned 4 ...
 }
 ... default aligned ...
 ---



The code overlaps and it is not much smart.
Jun 07 2012
prev sibling next sibling parent "Kagamin" <spam here.lot> writes:
template Aligned(alias Content)
{
  static if(size_t.sizeof==4)
   align(4) struct Aligned{ mixin Content; }
  else
   align(8) struct Aligned{ mixin Content; }
}
Jun 08 2012
prev sibling next sibling parent "Katayama Hirofumi MZ" <katayama.hirofumi.mz gmail.com> writes:
version(Win64) {
     private const const_align = 8;
} else {
     private const const_align = 1;
}
align(const_align):
...long code...

Please support me!!  Please, please!
Jun 27 2012
prev sibling parent "Katayama Hirofumi MZ" <katayama.hirofumi.mz gmail.com> writes:
private template Aligned() {
     ...long code...
}

version(Win64) {
     align(8): mixin Aligned!();
} else {
     align(1): mixin Aligned!();
}

---END of THREAD---
Aug 03 2012