test equality (of two numbers, symbols, or characters)
Major Section:  PROGRAMMING

(= 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.