Returns a type specifier for the integers handled by a specified external format.
external-format
external-format-foreign-type external-format => type-specifier
An external character format.
type-specifier
A type specifier describing the integer types handled by external-format .
Takes the name of an external format, and returns a Lisp type specifier for the type of integers that the external format handles on the foreign side.
external-format-type
LispWorks User Guide and Reference Manual - 21 Dec 2011