diff options
Diffstat (limited to 'binary-tree.lisp')
| -rw-r--r-- | binary-tree.lisp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/binary-tree.lisp b/binary-tree.lisp index b26b8fb..aab189d 100644 --- a/binary-tree.lisp +++ b/binary-tree.lisp @@ -1,3 +1,5 @@ +(in-package "ACL2") + (defun emptyp (x) (atom x)) |