PRINTF(stream, ": 0x%x\n", ((dw) & himask) >> (lo));
}
+#ifdef DEBUG
#define MBZ( dw, hi, lo) do { \
unsigned x = (dw) >> (lo); \
unsigned lomask = (1 << (lo)) - 1; \
himask = (1UL << (hi)) - 1; \
assert ((x & himask & ~lomask) == 0); \
} while (0)
+#else
+#define MBZ( dw, hi, lo) do { \
+} while (0)
+#endif
static void
FLAG(