Major Section: ACL2-BUILT-INS
(= x y) is logically equivalent to (equal x y).
Unlike equal, = has a guard requiring both of its arguments
to be numbers. Generally, = is executed more efficiently than
equal.
For a discussion of the various ways to test against 0, See zero-test-idioms.
= is a Common Lisp function. See any Common Lisp documentation
for more information.