[FFmpeg-devel] [PATCH] check if channel layout matches number of channels

[Reimar Döffinger]

On Sun, Apr 19, 2009 at 12:17:32AM -0400, Justin Ruggles wrote:
> +        x &= x-1;

// unset lowest set bit

Just because it is less obfuscated and maybe a somewhat common trick is
no reason to not document it.