vroundup_ct      2891 src/alloc.c    #define vroundup(x) (eassume ((x) >= 0), vroundup_ct (x))
vroundup_ct      2895 src/alloc.c    enum {VECTOR_BLOCK_BYTES = VECTOR_BLOCK_SIZE - vroundup_ct (sizeof (void *))};
vroundup_ct      2899 src/alloc.c    enum { VBLOCK_BYTES_MIN = vroundup_ct (header_size + sizeof (Lisp_Object)) };
vroundup_ct      2903 src/alloc.c    enum { VBLOCK_BYTES_MAX = vroundup_ct ((VECTOR_BLOCK_BYTES / 2) - word_size) };