Major Section: ACL2-BUILT-INS
(Char-downcase x) is equal to #\a when x is #\A, #\b
when x is #\B, ..., and #\z when x is #\Z, and is
x for any other character.
The guard for char-downcase requires its argument to be a standard
character (see standard-char-p).
Char-downcase is a Common Lisp function. See any Common Lisp
documentation for more information.
To see the ACL2 definition of this function, see pf.
