#### 25.2.28 machine-version [Function]

`machine-version` <no arguments> ⇒ description

#### Arguments and Values::

description—a string or nil.

#### Description::

Returns a string that identifies the version of the computer hardware on which Common Lisp is running, or nil if no such value can be computed.

#### Examples::

     (machine-version) ⇒  "KL-10, microcode 9"

#### Affected By::

The machine version, and the implementation.

#### See Also::

machine-type , machine-instance