[ovs-dev] [PATCH v2 2/9] lib/util: Add ctz64() and popcount64().

[Ben Pfaff]

On Wed, Nov 13, 2013 at 01:32:42PM -0800, Jarno Rajahalme wrote:
> Add raw_ctz64(), ctz64(), and popcount64() using builtins when
> available.
> 
> I'm not sure if the "UINT64_MAX == ~0UL" and "UINT64_MAX == ~0ULL"
> work in all cases as I imagine they would.

I think you could use ULONG_MAX and ULLONG_MAX, any reason not to?

> Signed-off-by: Jarno Rajahalme <jrajahalme at nicira.com>

Acked-by: Ben Pfaff <blp at nicira.com>

By the way, I've been thinking about breaking the bitwise stuff out
into a new bitwise.h header.  What do you think of that?