Hi,
I need to read 2, 4 or 8 bytes in a processor independent way. For example:
I have 4 bytes ($12 $34 $56 $78), starting with the most signifikant (like
the 68k processor). Reading a DWord under i386 swaps the bytes ($78563412).
Is there a fast way/procedure to read a word/dword/qword independen
> Hi,
>
> I need to read 2, 4 or 8 bytes in a processor independent way. For
> example:
> I have 4 bytes ($12 $34 $56 $78), starting with the most signifikant (like
> the 68k processor). Reading a DWord under i386 swaps the bytes
> ($78563412).
> Is there a fast way/procedure to read a word/dword/q
The word you are looking for is 'Big Endian'. Have a google on 'Big Endian'
and 'Little Endian' on google.
this is a delphi routine, it may not work in FPC, certainly I would try it
first in Delphi compatibility mode, and with Intel style assembler syntax:
function Swap32(value : dword) : dword
On Fri, 4 Jul 2003 11:42:59 +0200 (CEST)
"Peter Vreman" <[EMAIL PROTECTED]> wrote:
> > Hi,
> >
> > I need to read 2, 4 or 8 bytes in a processor independent way. For
> > example:
> > I have 4 bytes ($12 $34 $56 $78), starting with the most signifikant
> > (like the 68k processor). Reading a DWord
>> > If not, how can I determine the current processor byte order?
>>
>> {$ifdef FPC_BIG_ENDIAN}
>> {$ifdef FPC_LITTLE_ENDIAN}
>
> Thanks.
Oops... this was 1.1 only. For 1.0.x (and still supported by 1.1, but
deprecated) it is ENDIAN_LITTLE and ENDIAN_BIG
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