ERROR: Function 'ROTATEF' undefined

[VitoVan]

Welcome to JSCL (version 25e0341 built on 18 May 2023)

JSCL is a Common Lisp implementation on Javascript.
For more information, visit the project page at [GitHub](https://github.com/jscl-project/jscl).

CL-USER> (let ((n 0) 
...         (x (list 'a 'b 'c 'd 'e 'f 'g))) 
...     (rotatef (nth (incf n) x) 
...              (nth (incf n) x) 
...              (nth (incf n) x)) 
...     x) 
ERROR: Function 'ROTATEF' undefined
CL-USER>

http://clhs.lisp.se/Body/m_rotate.htm