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| ANSI Common Lisp 12 Numbers 12.2 Dictionary of Numbers
12.2.51 upgraded-complex-part-type | Function
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-type is to reveal how an implementation does its upgrading. See Also: complex (function and type) Notes: Allegro CL Implementation Details: None.

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