On Sun, Jan 03, 2016 at 08:21:00PM +0100, Clément Bœsch wrote:
[...]
> +static av_always_inline av_const int ff_parity(uint32_t v)
> +{
> +#if HAVE_PARITY
> + return __builtin_parity(v);
> +#else
> + return av_popcount(v) & 1;doing a popcount being overkill, this could be replaced with (0x6996966996696996ULL >> (x & 63) ^ (x>>7) ^ (x>>6)) & 1 Whatever people prefers -- Clément B.
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