DEFLATE_MIN_SIZE
#define DEFLATE_SIZE(x) (((x) >> 4) + DEFLATE_MIN_SIZE)
#define DEFLATE_MAKE_OPT(w) ((((w) - DEFLATE_MIN_SIZE) << 4) \
if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)
if (w_size < DEFLATE_MIN_SIZE || w_size > DEFLATE_MAX_SIZE)