(floor*): Use `floor' instead of doing most the work ourselves.

1 files changed, 2 insertions, 13 deletions

diff --git a/lisp/emacs-lisp/cl-extra.el b/lisp/emacs-lisp/cl-extra.el
index 5b1fcc49b3d..abd980a6020 100644
--- a/lisp/emacs-lisp/cl-extra.el
+++ b/lisp/emacs-lisp/cl-extra.el
@@ -387,19 +387,8 @@ If so, return the true (non-nil) value returned by PREDICATE."
 (defun floor* (x &optional y)
   "Return a list of the floor of X and the fractional part of X.
 With two arguments, return floor and remainder of their quotient."
-  (if y
-      (if (and (integerp x) (integerp y))
-          (if (and (>= x 0) (>= y 0))
-              (list (/ x y) (% x y))
-            (let ((q (cond ((>= x 0) (- (/ (- x y 1) (- y))))
-                           ((>= y 0) (- (/ (- y x 1) y)))
-                           (t (/ (- x) (- y))))))
-              (list q (- x (* q y)))))
-        (let ((q (floor (/ x y))))
-          (list q (- x (* q y)))))
-    (if (integerp x) (list x 0)
-      (let ((q (floor x)))
-        (list q (- x q))))))
+  (let ((q (floor x y)))
+    (list q (- x (if y (* y q) q)))))
 
 (defun ceiling* (x &optional y)
   "Return a list of the ceiling of X and the fractional part of X.