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Why is there no REAL number data type?
Date: Mon, 29 Jan 90 11:57 PST
From: Robert D. Pfeiffer <RDP@ALAN.kahuna.decnet.lockheed.com>
Can anyone tell me why the type REAL isn't defined in
Common Lisp (nor SCL)? ...
By popular demand, and especially because it's important to CLOS method
dispatch to have a real class (ha,ha) there and not just something consed
up by deftype:
ANSI Common Lisp will have a type named REAL and an associated REALP
predicate. The type is essentially equivalent to (OR RATIONAL FLOAT),
except that it is also a primitive CLOS class, and it is a "type
specifier that abbreviates" (i.e., it also handles low-hi ranges like
the other scalar number types do).