upgraded-complex-part-type (original) (raw)

ANSI Common Lisp 12 Numbers 12.2 Dictionary of Numbers

Syntax:

upgraded-complex-part-type typespec &optional environment upgraded-typespec

Arguments and Values:

typespec - a type specifier.

environment - an environment object. The default is nil, denoting the null lexical environment and the and current global environment.

upgraded-typespec - a type specifier.

Description:

upgraded-complex-part-type returns the part type of the most specialized complex number representation that can hold parts of type typespec.

The typespec is a subtype of (and possibly type equivalent to) the upgraded-typespec.

The purpose of upgraded-complex-part-typeis to reveal how an implementation does its upgrading.

See Also:

complex (function and type)

Notes:

Allegro CL Implementation Details:

None.