simple-bit-vector, bit-vector, vector, simple-array, array, sequence, t

The type of a bit vector that is not displaced to another array, has no fill pointer, and is not expressly adjustable is a subtype of type simple-bit-vector.

Abbreviating.

size — a non-negative fixnum, or the symbol *. The default is the symbol *.

This denotes the same type as the type (simple-array bit (size)); that is, the set of simple bit vectors of size size.