Arguments: type function
This function is called for its side effects. The return value has no meaning. This function tells the compiler that a typep form:
(typep x 'type)
can be transformed into the form:
(funcall predicate x)
The compiler will make the transformation where possible.
type must be a type, typically defined by the
user with deftype.
predicate should be a function object or a symbol
naming a function. That function must accept any Lisp object as a
single argument and return nil if the object
is not of type type, true if
it is of type type. remove-typep-transformer removes the
transform.
See compiling.htm for general information on compiling and see Adding typep-transformers in that document for more information on typep transforms.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.