Mailing List archive
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[linux-dvb] Re: Newstruct and DVB-C with QAM_256
Sergei Haller wrote:
> On Thu, 4 Jul 2002, Holger Waechtler (HW) wrote:
>
> So why don't you scale by 257: [0x00...0xFF]*257 = [0x0000...0xFFFF]
>
> ... but wait, 257 = 0x101, so 0xXY * 0x101 = 0xXYXY ...
>
> so scaling by 257 is the same as duplicating the 8 bit values...
>
but computationally a little more expensive -- a multiplication costs
more than the shift-or combination
;)
well it does not really matter, I'm sure there are still about 100 other
ways to do it...
Holger
--
Info:
To unsubscribe send a mail to listar@linuxtv.org with "unsubscribe linux-dvb" as subject.
Home |
Main Index |
Thread Index