[FFmpeg-devel] [PATCH] lavu/intmath: add faster clz support

[Ganesh Ajjanagadde]

On Thu, Dec 17, 2015 at 9:25 AM, Clément Bœsch <u at pkh.me> wrote:
> On Thu, Dec 17, 2015 at 09:23:53AM -0800, Ganesh Ajjanagadde wrote:
>> On Thu, Dec 17, 2015 at 9:20 AM, Kieran Kunhya <kierank at obe.tv> wrote:
>> >>> +static av_always_inline av_const unsigned ff_clz_c(unsigned v)
>> >>> +{
>> >>> +    unsigned i = sizeof(x) * 8;
>> >>> +
>> >>> +    while (x) {
>> >>> +        x >>= 1;
>> >>> +        i--;
>> >>> +    }
>> >>> +
>> >>> +    return i;
>> >>> +}
>> >>> +#endif
>> >>> +
>> >
>> > erm, does even work?
>>
>> you mean in what sense? I literally copy/pasted it from avfilter/af_sofalizer.
>> If you mean building correctly, I don't know as I have the built-in.
>> But then this patch does not actually use it yet; merely adds it to
>> the header.
>
> v → x in arg

oops, fixed, along with the signature locally.

>
> --
> Clément B.
>
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