less-than-or-equal test for characters
Major Section:  ACL2-BUILT-INS

(char<= x y) is true if and only if the character code of x is less than or equal to that of y. See char-code.

The guard for char<= specifies that its arguments are characters.

Char<= is a Common Lisp function. See any Common Lisp documentation for more information.

To see the ACL2 definition of this function, see pf.