OFFSET_MASK
#define OFFSET_MASK ((1 << (16 - MATCH_BITS)) - 1)
#define OFFSET_MASK ((1 << (16 - MATCH_BITS)) - 1)
#define OFFSET_MASK ((1 << (16 - MATCH_BITS)) - 1)
#define OFFSET_MASK ((1 << (16 - MATCH_BITS)) - 1)
#define OFFSET_MASK(val) (((val) >>8) & 0xff)