(and)

(angle)

(and expression ...)

Apply the logical AND.

This function performs a logical AND to the expression that precedes it. If both statements return T (true), the and function returns T. If either or both of the statements returns nil (false) the and function returns nil.

Examples

Code	Returns
(setq d 9) (and (> d 12) (< d 13))	nil
(setq d 12.25) (and (> d 12) (< d 13))	T

Tell me about...

(~ number)

(boole function integer1 integer2 ...)

(not item)

(or statement ...)

LISP Compatibility

Programming Overview of LISP (LISt Processing) Language