[FFmpeg-devel] indeo4/indeo5 inverse quantization

Maxim max_pole
Mon May 31 01:59:25 CEST 2010


M?ns Rullg?rd schrieb:
> Maxim <max_pole at gmx.de> writes:
>
>   
>>> ((q >> 1) - (q & 1))
>>> could be replaced by
>>>
>>> ((q^1)-1)>>1
>>>       
>> What is the advantage of such a replacement? Anyway it looks more
>> compactly and friendly to me...
>>     
>
> The first form requires two registers for intermediate values on
> some CPUs, whereas the second only needs one.
>
>   

Ok, I agree with it. Commited...

Best regards
Maxim



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