MASK 256 src/cmd/5c/txt.c constnode.vconst = v & MASK(32); MASK 639 src/cmd/cc/com64.c c &= MASK(n); MASK 642 src/cmd/cc/com64.c c |= ~MASK(n); MASK 1054 src/cmd/cc/sub.c m = MASK(8*sizeof(uvlong));