array_bytes - get number of allocated members in array

#include <array.h>

int64 array_bytes(array* x);

array x; int64 bytes = array_bytes(&x);

array_bytes returns the number of initialized bytes in x, without regard to t.

If x is unallocated, array_length and array_bytes return 0.

array_allocate(3), array_get(3), array_fail(3), array_length(3),