21 #define array_copy(dest, src, count)                          \  argument
23         STATIC_ASSERT(sizeof((dest)[0]) == sizeof((src)[0])); \
24         memcpy((dest), (src), sizeof((dest)[0]) * (count));   \
27 #define array_shift(array, dest, src)                                          \  argument
29         assert(src <= countof((array)));                                       \
31         memmove((array) + (dest), (array) + (src),                             \
32                 sizeof((array)[0]) * (countof((array)) - MAX((src), (dest)))); \
57 #define array_shift_down(array, dest, src)                             \  argument
59         assert(src > dest);                                            \
60         assert(src <= countof((array)));                               \
61         array_shift((array), (dest), (src));                           \
62         array_clear_end((array), countof((array)) - ((src) - (dest))); \