On Wed, Dec 03, 2014 at 05:58:58PM +0530, anshul.ffm...@gmail.com wrote:
[...]
> +static unsigned int av_always_inline is_oddparity1p7(unsigned int val)
> +{
> +//#if defined(__x86_64__) || defined(_M_X64) || defined(__i386) ||
> defined(_M_IX86)
> +#if 0
> + asm goto (
> + "and $0x7F, %0\n\t"
> + "jnp %l1 \/n\t"
> + :/* no output */
> + :"r"(val)
> + :"cc"
> + :odd
> + );
> + val = !(val&0x8);
> +odd:
> + val = !!(val&0x80);
> +#else
> + int ones = 0;
> + int i = 0;
> +
> + for (i = 0; i < 7; i++) {
> + if (val & (1 << i))
> + ones++;
> + }
> + val = ones & 1;
> +#endif
> + return val;
> +}
unless i'm mistaken, i think you just want:
return av_popcount(val & 0x7f) & 1;
[...]
--
Clément B.
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