Major Section: ACL2-BUILT-INS
(evenp x) is true if and only if the integer
x is even.
Actually, in the ACL2 logic
(evenp x) is defined to be true when
x/2 is an integer.
The guard for
evenp requires its argument to be an integer.
Evenp is a Common Lisp function. See any Common Lisp
documentation for more information.
To see the ACL2 definition of this function, see pf.