DADDR
if (0 == memcmp(*inbuf, DADDR(d), d->size)) {
p = DADDR(&(expr->data.value));
p = DADDR(&(expr_op->data.value));
#define pc_daddrdb(PCFS, DADDR) /* DEV_BSIZE "sector" addr to sector addr */ \
((DADDR) >> (PCFS)->pcfs_sdshift)
#define pc_daddrcl(PCFS, DADDR) /* cluster for disk address */ \
pc_dbtocl(pc_daddrdb(PCFS, DADDR) - (PCFS)->pcfs_datastart)))