Re: Triple parity and beyond
From: "H. Peter Anvin" <hpa@zytor.com>
Date: 2013-11-20 19:00:12
Also in:
linux-btrfs
On 11/20/2013 10:56 AM, Andrea Mazzoleni wrote:
Hi,
Yep. At present to multiply for 2^-1 I'm using in C:
static inline uint64_t d2_64(uint64_t v)
{
uint64_t mask = v & 0x0101010101010101U;
mask = (mask << 8) - mask;(mask << 7) I assume...