not (Type Specifier) (ANSI and GNU Common Lisp Document)

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#### 4.4.19 not [Type Specifier]

#### Compound Type Specifier Kind::

Combining.

#### Compound Type Specifier Syntax::

(`not`{typespec})

#### Compound Type Specifier Arguments::

typespec—a type specifier.

#### Compound Type Specifier Description::

This denotes the set of all objects that are not of the type typespec.

The argument is required, and cannot be *.

The symbol not is not valid as a type specifier.