Major Section: ACL2-BUILT-INS
For a string x, (string-upcase x) is the result of applying
char-upcase to each character in x.
The guard for string-upcase requires its argument to be a string
containing only standard characters.
String-upcase is a Common Lisp function. See any Common Lisp
documentation for more information.
To see the ACL2 definition of this function, see pf.