blk0
#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
#define blk0(i) block->l[i]
#define blk0(i) block.l[i]
#define blk0(i) (block.l[i] = (rol(block.l[i],24)&0xFF00FF00) \